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Funds Holding XLO

On this page, we present all of the funds holding XLO from our database of 13F filers, detailed in the table below. The first column indicates the name of each of the funds holding XLO, with a link to that fund's top holdings. The next columns indicate the amount of XLO stock held by each of the funds holding XLO, followed by the XLO position size held by the fund, and lastly the date of the quarterly filing period the data represents. In total, we count 35 funds holding XLO within the last two filing periods in our coverage universe of 13F filers, with the largest position size having been reported by Bain Capital Life Sciences Investors LLC. For more details on the positions held by Bain Capital Life Sciences Investors LLC (or by any of the other funds holding XLO), click the fund name in the "Holder" column of the funds-holding-XLO table below.

HolderAmountPosition Size
($ in 1000's)
 As of
Bain Capital Life Sciences Investors LLC2,805,413$1,543 12/31/2023
     XLO2,805,413$1,543 12/31/2023
Atlas Venture Life Science Advisors LLC2,759,344$1,518 12/31/2023
     XLO2,759,344$1,518 12/31/2023
FMR LLC1,907,671$1,049 12/31/2023
     XLO1,907,671$1,049 12/31/2023
Octagon Capital Advisors LP1,785,000$982 12/31/2023
     XLO1,785,000$982 12/31/2023
RiverVest Venture Management LLC1,441,444$793 12/31/2023
     XLO1,441,444$793 12/31/2023
Rock Springs Capital Management LP1,440,759$792 12/31/2023
     XLO1,440,759$792 12/31/2023
Vanguard Group Inc.902,531$496 12/31/2023
     XLO902,531$496 12/31/2023
Artal Group S.A.450,000$248 12/31/2023
     XLO450,000$248 12/31/2023
Trustees of Columbia University in the City of New York249,635$137 12/31/2023
     XLO249,635$137 12/31/2023
FIL Ltd218,705$120 12/31/2023
     XLO218,705$120 12/31/2023
Renaissance Technologies LLC209,700$115 12/31/2023
     XLO209,700$115 12/31/2023
Bridgeway Capital Management Inc.155,481$86 12/31/2023
     XLO155,481$86 12/31/2023
Morgan Stanley127,265$70 12/31/2023
     XLO127,265$70 12/31/2023
Laurion Capital Management LP116,847$64 12/31/2023
     XLO116,847$64 12/31/2023
Geode Capital Management LLC84,826$47 12/31/2023
     XLO84,826$47 12/31/2023
ArrowMark Colorado Holdings LLC83,373$46 12/31/2023
     XLO83,373$46 12/31/2023
PFG Investments LLC30,000$32 03/31/2024
     XLO30,000$32 03/31/2024
Citadel Advisors LLC51,419$28 12/31/2023
     XLO51,419$28 12/31/2023
BlackRock Inc.46,862$26 12/31/2023
     XLO46,862$26 12/31/2023
Summit Trail Advisors LLC16,000$17 03/31/2024
     XLO16,000$17 03/31/2024
Millennium Management LLC30,351$17 12/31/2023
     XLO30,351$17 12/31/2023
Northern Trust Corp17,798$10 12/31/2023
     XLO17,798$10 12/31/2023
State Street Corp15,690$9 12/31/2023
     XLO15,690$9 12/31/2023
Tower Research Capital LLC TRC 13,975$8 12/31/2023
     XLO13,975$8 12/31/2023
Charles Schwab Investment Management Inc.11,925$7 12/31/2023
     XLO11,925$7 12/31/2023
Virtu Financial LLC10,763$6 12/31/2023
     XLO10,763$6 12/31/2023
Dunhill Financial LLC10,274$6 12/31/2023
     XLO10,274$6 12/31/2023
JPMorgan Chase & Co.2,857$2 12/31/2023
     XLO2,857$2 12/31/2023
Cullen Frost Bankers Inc.100$0 12/31/2023
     XLO100$0 12/31/2023
Bank of America Corp DE11$0 12/31/2023
     XLO11$0 12/31/2023
Wells Fargo & Company MN106$0 12/31/2023
     XLO106$0 12/31/2023
Proequities Inc.0$0 12/31/2023
     XLO0$0 12/31/2023
Royal Bank of Canada468$0 12/31/2023
     XLO468$0 12/31/2023
UBS Group AG201$0 12/31/2023
     XLO201$0 12/31/2023
Qube Research & Technologies Ltd4$0 12/31/2023
     XLO4$0 12/31/2023
Key Financial Inc830$0 12/31/2023
     XLO830$0 12/31/2023

See Summary: Institutional Holders of XLO
See Details: Top 10 Hedge Funds Holding XLO
Also See: XLO Insider Buying
Also See: XLO Holdings Changes

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