{
  "updated": "2026-06-08",
  "source": {
    "name": "Nasdaq press releases (primary) · Wikipedia 'List of Nasdaq-100 companies' (historical mirror)",
    "url": "https://en.wikipedia.org/wiki/Nasdaq-100#Component_changes",
    "note": "纳指 100 年度重组（Annual reconstitution）每年 12 月生效；其余为成分公司因股价权重不足、并购、上市地变更等触发的特别再平衡（Special rebalance）。条目按生效日排序；年度重组按字母顺序成对呈现，少数年份因 share class 拆分或前期 spinoff 导致进出数量不对称（以 — 占位）。"
  },
  "changes": [
    { "effectiveDate": "2026-05-18", "type": "权重不足", "typeEn": "Weight requirement", "addition": { "ticker": "LITE", "name": "Lumentum", "sector": "Information Technology" }, "removal": { "ticker": "CSGP", "name": "CoStar Group", "sector": "Real Estate" }, "reason": "CoStar Group 月度权重不达标，Lumentum 顶替。", "reasonEn": "CoStar Group did not meet the minimum monthly weight requirements; Lumentum added." },
    { "effectiveDate": "2026-04-20", "type": "权重不足", "typeEn": "Weight requirement", "addition": { "ticker": "SNDK", "name": "SanDisk", "sector": "Information Technology" }, "removal": { "ticker": "TEAM", "name": "Atlassian", "sector": "Information Technology" }, "reason": "Atlassian 月度权重不达标，SanDisk 顶替。", "reasonEn": "Atlassian did not meet the minimum monthly weight requirements; SanDisk added." },
    { "effectiveDate": "2026-01-20", "type": "上市地变更", "typeEn": "Listing transfer", "addition": { "ticker": "WMT", "name": "Walmart", "sector": "Consumer Staples" }, "removal": { "ticker": "AZN", "name": "AstraZeneca", "sector": "Health Care" }, "reason": "Walmart 由 NYSE 转至 Nasdaq；AstraZeneca 反向迁出，由 Walmart 顶替。", "reasonEn": "Walmart transferred its listing from NYSE to Nasdaq; AstraZeneca moved to NYSE — Walmart replaced it.", "sourceUrl": "https://en.wikipedia.org/wiki/Nasdaq-100#Component_changes" },
    { "effectiveDate": "2026-01-09", "type": "权重不足", "typeEn": "Weight requirement", "addition": { "ticker": "—", "name": "(no replacement)", "sector": "" }, "removal": { "ticker": "VSNT", "name": "Versant", "sector": "Communication Services" }, "reason": "Versant 月度权重不达标，剔除后纳指 100 暂以 101 减至 100。", "reasonEn": "Versant removed for failing the minimum monthly weight requirement; index trimmed back to 100 after the earlier Versant spin-off bumped it to 101." },
    { "effectiveDate": "2026-01-05", "type": "分拆上市", "typeEn": "Spin-off", "addition": { "ticker": "VSNT", "name": "Versant", "sector": "Communication Services" }, "removal": { "ticker": "—", "name": "(no removal)", "sector": "" }, "reason": "Versant 自 Comcast 分拆上市，按规则自动纳入纳指 100。", "reasonEn": "Versant spun off from Comcast and was automatically added to the Nasdaq-100." },

    { "effectiveDate": "2025-12-22", "type": "年度重组", "typeEn": "Annual reconstitution", "addition": { "ticker": "ALNY", "name": "Alnylam Pharmaceuticals", "sector": "Health Care" }, "removal": { "ticker": "BIIB", "name": "Biogen", "sector": "Health Care" }, "reason": "2025 年年度重组。", "reasonEn": "2025 annual reconstitution." },
    { "effectiveDate": "2025-12-22", "type": "年度重组", "typeEn": "Annual reconstitution", "addition": { "ticker": "FER", "name": "Ferrovial SE", "sector": "Industrials" }, "removal": { "ticker": "CDW", "name": "CDW", "sector": "Information Technology" }, "reason": "2025 年年度重组。", "reasonEn": "2025 annual reconstitution." },
    { "effectiveDate": "2025-12-22", "type": "年度重组", "typeEn": "Annual reconstitution", "addition": { "ticker": "INSM", "name": "Insmed", "sector": "Health Care" }, "removal": { "ticker": "GFS", "name": "GlobalFoundries", "sector": "Information Technology" }, "reason": "2025 年年度重组。", "reasonEn": "2025 annual reconstitution." },
    { "effectiveDate": "2025-12-22", "type": "年度重组", "typeEn": "Annual reconstitution", "addition": { "ticker": "MPWR", "name": "Monolithic Power Systems", "sector": "Information Technology" }, "removal": { "ticker": "LULU", "name": "Lululemon", "sector": "Consumer Discretionary" }, "reason": "2025 年年度重组。", "reasonEn": "2025 annual reconstitution." },
    { "effectiveDate": "2025-12-22", "type": "年度重组", "typeEn": "Annual reconstitution", "addition": { "ticker": "STX", "name": "Seagate Technology", "sector": "Information Technology" }, "removal": { "ticker": "ON", "name": "ON Semiconductor", "sector": "Information Technology" }, "reason": "2025 年年度重组。", "reasonEn": "2025 annual reconstitution." },
    { "effectiveDate": "2025-12-22", "type": "年度重组", "typeEn": "Annual reconstitution", "addition": { "ticker": "WDC", "name": "Western Digital", "sector": "Information Technology" }, "removal": { "ticker": "TTD", "name": "The Trade Desk", "sector": "Communication Services" }, "reason": "2025 年年度重组。", "reasonEn": "2025 annual reconstitution." },

    { "effectiveDate": "2025-11-06", "type": "权重不足", "typeEn": "Weight requirement", "addition": { "ticker": "—", "name": "(no replacement)", "sector": "" }, "removal": { "ticker": "SOLS", "name": "Solstice Advanced Materials", "sector": "Materials" }, "reason": "Solstice 月度权重不达标，剔除后纳指 100 由 101 减至 100。", "reasonEn": "Solstice did not meet the monthly weight requirement; index trimmed back to 100 after the earlier spin-off." },
    { "effectiveDate": "2025-10-30", "type": "分拆上市", "typeEn": "Spin-off", "addition": { "ticker": "SOLS", "name": "Solstice Advanced Materials", "sector": "Materials" }, "removal": { "ticker": "—", "name": "(no removal)", "sector": "" }, "reason": "Solstice Advanced Materials 自 Honeywell 分拆上市，按规则自动纳入。", "reasonEn": "Solstice Advanced Materials spun off from Honeywell and was automatically added." },
    { "effectiveDate": "2025-07-28", "type": "上市地变更", "typeEn": "Listing transfer", "addition": { "ticker": "TRI", "name": "Thomson Reuters", "sector": "Industrials" }, "removal": { "ticker": "ANSS", "name": "Ansys", "sector": "Information Technology" }, "reason": "Thomson Reuters 由 NYSE 转至 Nasdaq；Ansys 已被 Synopsys 收购退市。", "reasonEn": "Thomson Reuters transferred its listing from NYSE to Nasdaq; Ansys had been acquired by Synopsys." },
    { "effectiveDate": "2025-05-19", "type": "权重不足", "typeEn": "Weight requirement", "addition": { "ticker": "SHOP", "name": "Shopify", "sector": "Information Technology" }, "removal": { "ticker": "MDB", "name": "MongoDB", "sector": "Information Technology" }, "reason": "MongoDB 月度权重不达标，Shopify 顶替。", "reasonEn": "MongoDB did not meet the minimum monthly weight requirement; Shopify added." },

    { "effectiveDate": "2024-12-23", "type": "年度重组", "typeEn": "Annual reconstitution", "addition": { "ticker": "AXON", "name": "Axon Enterprise", "sector": "Industrials" }, "removal": { "ticker": "ILMN", "name": "Illumina", "sector": "Health Care" }, "reason": "2024 年年度重组。", "reasonEn": "2024 annual reconstitution." },
    { "effectiveDate": "2024-12-23", "type": "年度重组", "typeEn": "Annual reconstitution", "addition": { "ticker": "MSTR", "name": "MicroStrategy", "sector": "Information Technology" }, "removal": { "ticker": "MRNA", "name": "Moderna", "sector": "Health Care" }, "reason": "2024 年年度重组。", "reasonEn": "2024 annual reconstitution." },
    { "effectiveDate": "2024-12-23", "type": "年度重组", "typeEn": "Annual reconstitution", "addition": { "ticker": "PLTR", "name": "Palantir", "sector": "Information Technology" }, "removal": { "ticker": "SMCI", "name": "Super Micro Computer", "sector": "Information Technology" }, "reason": "2024 年年度重组。", "reasonEn": "2024 annual reconstitution." },

    { "effectiveDate": "2024-11-18", "type": "权重不足", "typeEn": "Weight requirement", "addition": { "ticker": "APP", "name": "AppLovin", "sector": "Communication Services" }, "removal": { "ticker": "DLTR", "name": "Dollar Tree", "sector": "Consumer Staples" }, "reason": "Dollar Tree 月度权重不达标，AppLovin 顶替。", "reasonEn": "Dollar Tree did not meet the minimum monthly weight requirement; AppLovin added." },
    { "effectiveDate": "2024-07-22", "type": "权重不足", "typeEn": "Weight requirement", "addition": { "ticker": "SMCI", "name": "Super Micro Computer", "sector": "Information Technology" }, "removal": { "ticker": "WBA", "name": "Walgreens Boots Alliance", "sector": "Consumer Staples" }, "reason": "Walgreens 月度权重不达标，Super Micro Computer 顶替。", "reasonEn": "Walgreens Boots Alliance did not meet the minimum monthly weight requirement; Super Micro Computer added." },
    { "effectiveDate": "2024-06-24", "type": "权重不足", "typeEn": "Weight requirement", "addition": { "ticker": "ARM", "name": "Arm Holdings", "sector": "Information Technology" }, "removal": { "ticker": "SIRI", "name": "Sirius XM", "sector": "Communication Services" }, "reason": "Sirius XM 月度权重不达标，Arm 顶替。", "reasonEn": "Sirius XM did not meet the minimum monthly weight requirement; Arm added." },
    { "effectiveDate": "2024-03-18", "type": "并购触发", "typeEn": "M&A trigger", "addition": { "ticker": "LIN", "name": "Linde", "sector": "Materials" }, "removal": { "ticker": "SPLK", "name": "Splunk", "sector": "Information Technology" }, "reason": "Cisco 完成对 Splunk 的收购，Linde 顶替。", "reasonEn": "Cisco completed its acquisition of Splunk; Linde added." },

    { "effectiveDate": "2023-12-18", "type": "年度重组", "typeEn": "Annual reconstitution", "addition": { "ticker": "CCEP", "name": "Coca-Cola Europacific Partners", "sector": "Consumer Staples" }, "removal": { "ticker": "ALGN", "name": "Align Technology", "sector": "Health Care" }, "reason": "2023 年年度重组。", "reasonEn": "2023 annual reconstitution." },
    { "effectiveDate": "2023-12-18", "type": "年度重组", "typeEn": "Annual reconstitution", "addition": { "ticker": "CDW", "name": "CDW", "sector": "Information Technology" }, "removal": { "ticker": "EBAY", "name": "eBay", "sector": "Consumer Discretionary" }, "reason": "2023 年年度重组。", "reasonEn": "2023 annual reconstitution." },
    { "effectiveDate": "2023-12-18", "type": "年度重组", "typeEn": "Annual reconstitution", "addition": { "ticker": "DASH", "name": "DoorDash", "sector": "Consumer Discretionary" }, "removal": { "ticker": "ENPH", "name": "Enphase Energy", "sector": "Information Technology" }, "reason": "2023 年年度重组。", "reasonEn": "2023 annual reconstitution." },
    { "effectiveDate": "2023-12-18", "type": "年度重组", "typeEn": "Annual reconstitution", "addition": { "ticker": "MDB", "name": "MongoDB", "sector": "Information Technology" }, "removal": { "ticker": "JD", "name": "JD.com", "sector": "Consumer Discretionary" }, "reason": "2023 年年度重组。", "reasonEn": "2023 annual reconstitution." },
    { "effectiveDate": "2023-12-18", "type": "年度重组", "typeEn": "Annual reconstitution", "addition": { "ticker": "ROP", "name": "Roper Technologies", "sector": "Information Technology" }, "removal": { "ticker": "LCID", "name": "Lucid Group", "sector": "Consumer Discretionary" }, "reason": "2023 年年度重组。", "reasonEn": "2023 annual reconstitution." },
    { "effectiveDate": "2023-12-18", "type": "年度重组", "typeEn": "Annual reconstitution", "addition": { "ticker": "SPLK", "name": "Splunk", "sector": "Information Technology" }, "removal": { "ticker": "ZM", "name": "Zoom Video", "sector": "Communication Services" }, "reason": "2023 年年度重组。", "reasonEn": "2023 annual reconstitution." },

    { "effectiveDate": "2023-12-14", "type": "并购触发", "typeEn": "M&A trigger", "addition": { "ticker": "TTWO", "name": "Take-Two Interactive", "sector": "Communication Services" }, "removal": { "ticker": "SGEN", "name": "Seagen", "sector": "Health Care" }, "reason": "Pfizer 完成对 Seagen 的收购，Take-Two 顶替。", "reasonEn": "Pfizer completed its acquisition of Seagen; Take-Two added." },
    { "effectiveDate": "2023-07-17", "type": "并购触发", "typeEn": "M&A trigger", "addition": { "ticker": "TTD", "name": "The Trade Desk", "sector": "Communication Services" }, "removal": { "ticker": "ATVI", "name": "Activision Blizzard", "sector": "Communication Services" }, "reason": "Microsoft 完成对 Activision Blizzard 的收购，The Trade Desk 顶替。", "reasonEn": "Microsoft completed its acquisition of Activision Blizzard; The Trade Desk added." },
    { "effectiveDate": "2023-06-20", "type": "权重不足", "typeEn": "Weight requirement", "addition": { "ticker": "ON", "name": "ON Semiconductor", "sector": "Information Technology" }, "removal": { "ticker": "RIVN", "name": "Rivian Automotive", "sector": "Consumer Discretionary" }, "reason": "Rivian 月度权重不达标，ON 顶替。", "reasonEn": "Rivian did not meet the minimum monthly weight requirement; ON Semiconductor added." },
    { "effectiveDate": "2023-06-07", "type": "上市地变更", "typeEn": "Listing transfer", "addition": { "ticker": "GEHC", "name": "GE HealthCare", "sector": "Health Care" }, "removal": { "ticker": "FI", "name": "Fiserv", "sector": "Financials" }, "reason": "Fiserv 由 Nasdaq 转至 NYSE，GE HealthCare 顶替。", "reasonEn": "Fiserv transferred its listing from Nasdaq to NYSE; GE HealthCare added." },

    { "effectiveDate": "2022-12-19", "type": "年度重组", "typeEn": "Annual reconstitution", "addition": { "ticker": "BKR", "name": "Baker Hughes", "sector": "Energy" }, "removal": { "ticker": "BIDU", "name": "Baidu", "sector": "Communication Services" }, "reason": "2022 年年度重组。", "reasonEn": "2022 annual reconstitution." },
    { "effectiveDate": "2022-12-19", "type": "年度重组", "typeEn": "Annual reconstitution", "addition": { "ticker": "CSGP", "name": "CoStar Group", "sector": "Real Estate" }, "removal": { "ticker": "DOCU", "name": "DocuSign", "sector": "Information Technology" }, "reason": "2022 年年度重组。", "reasonEn": "2022 annual reconstitution." },
    { "effectiveDate": "2022-12-19", "type": "年度重组", "typeEn": "Annual reconstitution", "addition": { "ticker": "FANG", "name": "Diamondback Energy", "sector": "Energy" }, "removal": { "ticker": "MTCH", "name": "Match Group", "sector": "Communication Services" }, "reason": "2022 年年度重组。", "reasonEn": "2022 annual reconstitution." },
    { "effectiveDate": "2022-12-19", "type": "年度重组", "typeEn": "Annual reconstitution", "addition": { "ticker": "GFS", "name": "GlobalFoundries", "sector": "Information Technology" }, "removal": { "ticker": "SPLK", "name": "Splunk", "sector": "Information Technology" }, "reason": "2022 年年度重组。", "reasonEn": "2022 annual reconstitution." },
    { "effectiveDate": "2022-12-19", "type": "年度重组", "typeEn": "Annual reconstitution", "addition": { "ticker": "NTES", "name": "NetEase", "sector": "Communication Services" }, "removal": { "ticker": "SWKS", "name": "Skyworks Solutions", "sector": "Information Technology" }, "reason": "2022 年年度重组。", "reasonEn": "2022 annual reconstitution." },
    { "effectiveDate": "2022-12-19", "type": "年度重组", "typeEn": "Annual reconstitution", "addition": { "ticker": "RIVN", "name": "Rivian Automotive", "sector": "Consumer Discretionary" }, "removal": { "ticker": "VRSN", "name": "VeriSign", "sector": "Information Technology" }, "reason": "2022 年年度重组。", "reasonEn": "2022 annual reconstitution." },
    { "effectiveDate": "2022-12-19", "type": "年度重组", "typeEn": "Annual reconstitution", "addition": { "ticker": "WBD", "name": "Warner Bros. Discovery", "sector": "Communication Services" }, "removal": { "ticker": "—", "name": "(no pair)", "sector": "" }, "reason": "2022 年年度重组（净增 1 席，由于此前 share-class 调整）。", "reasonEn": "2022 annual reconstitution (net +1, balancing an earlier share-class adjustment)." },

    { "effectiveDate": "2022-11-21", "type": "权重不足", "typeEn": "Weight requirement", "addition": { "ticker": "ENPH", "name": "Enphase Energy", "sector": "Information Technology" }, "removal": { "ticker": "OKTA", "name": "Okta", "sector": "Information Technology" }, "reason": "Okta 月度权重不达标，Enphase 顶替。", "reasonEn": "Okta did not meet the minimum monthly weight requirement; Enphase added." },

    { "effectiveDate": "2021-12-20", "type": "年度重组", "typeEn": "Annual reconstitution", "addition": { "ticker": "ABNB", "name": "Airbnb", "sector": "Consumer Discretionary" }, "removal": { "ticker": "CDW", "name": "CDW", "sector": "Information Technology" }, "reason": "2021 年年度重组。", "reasonEn": "2021 annual reconstitution." },
    { "effectiveDate": "2021-12-20", "type": "年度重组", "typeEn": "Annual reconstitution", "addition": { "ticker": "DDOG", "name": "Datadog", "sector": "Information Technology" }, "removal": { "ticker": "CERN", "name": "Cerner", "sector": "Health Care" }, "reason": "2021 年年度重组。", "reasonEn": "2021 annual reconstitution." },
    { "effectiveDate": "2021-12-20", "type": "年度重组", "typeEn": "Annual reconstitution", "addition": { "ticker": "FTNT", "name": "Fortinet", "sector": "Information Technology" }, "removal": { "ticker": "CHKP", "name": "Check Point", "sector": "Information Technology" }, "reason": "2021 年年度重组。", "reasonEn": "2021 annual reconstitution." },
    { "effectiveDate": "2021-12-20", "type": "年度重组", "typeEn": "Annual reconstitution", "addition": { "ticker": "LCID", "name": "Lucid Group", "sector": "Consumer Discretionary" }, "removal": { "ticker": "FOX", "name": "Fox Corp. (Class B)", "sector": "Communication Services" }, "reason": "2021 年年度重组。", "reasonEn": "2021 annual reconstitution." },
    { "effectiveDate": "2021-12-20", "type": "年度重组", "typeEn": "Annual reconstitution", "addition": { "ticker": "PANW", "name": "Palo Alto Networks", "sector": "Information Technology" }, "removal": { "ticker": "FOXA", "name": "Fox Corp. (Class A)", "sector": "Communication Services" }, "reason": "2021 年年度重组。", "reasonEn": "2021 annual reconstitution." },
    { "effectiveDate": "2021-12-20", "type": "年度重组", "typeEn": "Annual reconstitution", "addition": { "ticker": "ZS", "name": "Zscaler", "sector": "Information Technology" }, "removal": { "ticker": "INCY", "name": "Incyte", "sector": "Health Care" }, "reason": "2021 年年度重组。", "reasonEn": "2021 annual reconstitution." },
    { "effectiveDate": "2021-12-20", "type": "年度重组", "typeEn": "Annual reconstitution", "addition": { "ticker": "—", "name": "(no pair)", "sector": "" }, "removal": { "ticker": "TCOM", "name": "Trip.com", "sector": "Consumer Discretionary" }, "reason": "2021 年年度重组（净减 1 席）。", "reasonEn": "2021 annual reconstitution (net −1 to balance earlier additions)." },

    { "effectiveDate": "2021-08-26", "type": "并购触发", "typeEn": "M&A trigger", "addition": { "ticker": "CRWD", "name": "CrowdStrike", "sector": "Information Technology" }, "removal": { "ticker": "MXIM", "name": "Maxim Integrated", "sector": "Information Technology" }, "reason": "Analog Devices 完成对 Maxim 的收购，CrowdStrike 顶替。", "reasonEn": "Analog Devices completed its acquisition of Maxim; CrowdStrike added." },
    { "effectiveDate": "2021-07-21", "type": "并购触发", "typeEn": "M&A trigger", "addition": { "ticker": "HON", "name": "Honeywell", "sector": "Industrials" }, "removal": { "ticker": "ALXN", "name": "Alexion Pharmaceuticals", "sector": "Health Care" }, "reason": "AstraZeneca 完成对 Alexion 的收购，Honeywell 顶替。", "reasonEn": "AstraZeneca completed its acquisition of Alexion; Honeywell added." },

    { "effectiveDate": "2020-12-21", "type": "年度重组", "typeEn": "Annual reconstitution", "addition": { "ticker": "AEP", "name": "American Electric Power", "sector": "Utilities" }, "removal": { "ticker": "BMRN", "name": "BioMarin Pharmaceutical", "sector": "Health Care" }, "reason": "2020 年年度重组。", "reasonEn": "2020 annual reconstitution." },
    { "effectiveDate": "2020-12-21", "type": "年度重组", "typeEn": "Annual reconstitution", "addition": { "ticker": "MRVL", "name": "Marvell Technology", "sector": "Information Technology" }, "removal": { "ticker": "CTXS", "name": "Citrix Systems", "sector": "Information Technology" }, "reason": "2020 年年度重组。", "reasonEn": "2020 annual reconstitution." },
    { "effectiveDate": "2020-12-21", "type": "年度重组", "typeEn": "Annual reconstitution", "addition": { "ticker": "MTCH", "name": "Match Group", "sector": "Communication Services" }, "removal": { "ticker": "EXPE", "name": "Expedia Group", "sector": "Consumer Discretionary" }, "reason": "2020 年年度重组。", "reasonEn": "2020 annual reconstitution." },
    { "effectiveDate": "2020-12-21", "type": "年度重组", "typeEn": "Annual reconstitution", "addition": { "ticker": "OKTA", "name": "Okta", "sector": "Information Technology" }, "removal": { "ticker": "LBTYA", "name": "Liberty Global (Class A)", "sector": "Communication Services" }, "reason": "2020 年年度重组。", "reasonEn": "2020 annual reconstitution." },
    { "effectiveDate": "2020-12-21", "type": "年度重组", "typeEn": "Annual reconstitution", "addition": { "ticker": "PTON", "name": "Peloton", "sector": "Consumer Discretionary" }, "removal": { "ticker": "LBTYK", "name": "Liberty Global (Class C)", "sector": "Communication Services" }, "reason": "2020 年年度重组。", "reasonEn": "2020 annual reconstitution." },
    { "effectiveDate": "2020-12-21", "type": "年度重组", "typeEn": "Annual reconstitution", "addition": { "ticker": "TEAM", "name": "Atlassian", "sector": "Information Technology" }, "removal": { "ticker": "TTWO", "name": "Take-Two Interactive", "sector": "Communication Services" }, "reason": "2020 年年度重组。", "reasonEn": "2020 annual reconstitution." },
    { "effectiveDate": "2020-12-21", "type": "年度重组", "typeEn": "Annual reconstitution", "addition": { "ticker": "—", "name": "(no pair)", "sector": "" }, "removal": { "ticker": "ULTA", "name": "Ulta Beauty", "sector": "Consumer Discretionary" }, "reason": "2020 年年度重组（净减 1 席）。", "reasonEn": "2020 annual reconstitution (net −1 to balance earlier additions)." },

    { "effectiveDate": "2020-10-19", "type": "权重不足", "typeEn": "Weight requirement", "addition": { "ticker": "KDP", "name": "Keurig Dr Pepper", "sector": "Consumer Staples" }, "removal": { "ticker": "WDC", "name": "Western Digital", "sector": "Information Technology" }, "reason": "Western Digital 月度权重不达标，Keurig Dr Pepper 顶替。", "reasonEn": "Western Digital did not meet the minimum monthly weight requirement; Keurig Dr Pepper added." },
    { "effectiveDate": "2020-08-24", "type": "权重不足", "typeEn": "Weight requirement", "addition": { "ticker": "PDD", "name": "Pinduoduo", "sector": "Consumer Discretionary" }, "removal": { "ticker": "NTAP", "name": "NetApp", "sector": "Information Technology" }, "reason": "NetApp 月度权重不达标，Pinduoduo 顶替。", "reasonEn": "NetApp did not meet the minimum monthly weight requirement; Pinduoduo added." },
    { "effectiveDate": "2020-07-20", "type": "权重不足", "typeEn": "Weight requirement", "addition": { "ticker": "MRNA", "name": "Moderna", "sector": "Health Care" }, "removal": { "ticker": "CSGP", "name": "CoStar Group", "sector": "Real Estate" }, "reason": "CoStar 月度权重不达标，Moderna 顶替。", "reasonEn": "CoStar did not meet the minimum monthly weight requirement; Moderna added." },
    { "effectiveDate": "2020-06-22", "type": "权重不足", "typeEn": "Weight requirement", "addition": { "ticker": "DOCU", "name": "DocuSign", "sector": "Information Technology" }, "removal": { "ticker": "UAL", "name": "United Airlines", "sector": "Industrials" }, "reason": "United Airlines 月度权重不达标，DocuSign 顶替。", "reasonEn": "United Airlines did not meet the minimum monthly weight requirement; DocuSign added." },
    { "effectiveDate": "2020-04-30", "type": "权重不足", "typeEn": "Weight requirement", "addition": { "ticker": "ZM", "name": "Zoom Video", "sector": "Communication Services" }, "removal": { "ticker": "WTW", "name": "Willis Towers Watson", "sector": "Financials" }, "reason": "WTW 月度权重不达标，Zoom 顶替。", "reasonEn": "WTW did not meet the minimum monthly weight requirement; Zoom added." },
    { "effectiveDate": "2020-04-20", "type": "权重不足", "typeEn": "Weight requirement", "addition": { "ticker": "DXCM", "name": "DexCom", "sector": "Health Care" }, "removal": { "ticker": "AAL", "name": "American Airlines", "sector": "Industrials" }, "reason": "American Airlines 月度权重不达标，DexCom 顶替。", "reasonEn": "American Airlines did not meet the minimum monthly weight requirement; DexCom added." }
  ]
}