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Livermore
Livermore
ZHEN

Citadel Advisors LLC

SEC CIK
0001423053
Latest filing
Sep 1, 2026

MRSN holding history

Mersana Therapeutics, Inc. in every 13F filed by Citadel Advisors LLC, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

MRSN overviewAll 13F holders of MRSNFull Q2 2026 holdings

Shares (Q1 2026)
0
Sold out in Q1 2026
Value
$0
% of portfolio
0.0%
Quarters held
17
Since Q1 2021
Holdings of MRSN by Citadel Advisors LLC, by quarter
QuarterSharesValue% of portfolioShare changeActionAll holders
Q1 20260$00.0%−22,493−100.0%Sold outHolders
Q4 202522,493$650.7K<0.1%+22,493NewHolders
Q1 20250$00.0%−421,360−100.0%Sold outHolders
Q4 2024421,360$602.5K<0.1%−3,990,195−90.4%ReducedHolders
Q3 20244,411,555$8.34M<0.1%+1,667,956+60.8%AddedHolders
Q2 20242,743,599$5.51M<0.1%−715,386−20.7%ReducedHolders
Q1 20243,458,985$15.5M<0.1%+1,532,054+79.5%AddedHolders
Q4 20231,926,931$4.47M<0.1%+312,208+19.3%AddedHolders
Q3 20231,614,723$2.05M<0.1%+1,614,647+2,124,535.5%AddedHolders
Q2 202376$250<0.1%−112,585−99.9%ReducedHolders
Q1 2023112,661$463.0K<0.1%−512,915−82.0%ReducedHolders
Q4 2022625,576$3.67M<0.1%+448,673+253.6%AddedHolders
Q3 2022176,903$1.20M<0.1%−174,512−49.7%ReducedHolders
Q2 2022351,415$1.62M<0.1%−335,274−48.8%ReducedHolders
Q1 2022686,689$2.74M<0.1%+378,182+122.6%AddedHolders
Q4 2021308,507$1.92M<0.1%+261,664+558.6%AddedHolders
Q3 202146,843$442.0K<0.1%−542,280−92.0%ReducedHolders
Q2 2021589,123$8.00M<0.1%+50,716+9.4%AddedHolders
Q1 2021538,407$8.71M<0.1%––Holders

Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.