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Spero Therapeutics, Inc. (SPRO)

NasdaqGS - NasdaqGS Real-time price. Currency in USD
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13.56-0.49 (-3.49%)
At close: 04:00PM EST
13.56 0.00 (0.00%)
After hours: 06:03PM EST

Major holders

Currency in USD
Breakdown
16.42%% of shares held by all insiders
58.16%% of shares held by institutions
69.58%% of float held by institutions
138Number of institutions holding shares

Top institutional holders

HolderSharesDate reported% outValue
Aquilo Capital Management, LLC3,829,20929 Jun 202111.91%53,455,757
BVF Inc.2,137,97829 Jun 20216.65%29,846,172
Blackrock Inc.1,778,82229 Jun 20215.53%24,832,355
Atlas Venture Associates IX, LLC1,376,96829 Jun 20214.28%19,222,473
Vanguard Group, Inc. (The)1,276,79029 Jun 20213.97%17,823,988
Rock Springs Capital Management, LP965,92829 Jun 20213.00%13,484,354
State Street Corporation810,73829 Jun 20212.52%11,317,902
Artal Group S.A.500,00029 Jun 20211.56%6,980,000
Novo Holdings A/S468,90229 Jun 20211.46%6,545,871
Ameriprise Financial, Inc.438,83729 Jun 20211.37%6,126,164

Top mutual fund holders

HolderSharesDate reported% outValue
Vanguard Total Stock Market Index Fund694,47129 Jun 20212.16%9,694,815
iShares Russell 2000 ETF554,70229 Jun 20211.73%7,743,639
SPDR (R) Ser Tr-SPDR (R) S&P (R) Biotech ETF421,08729 Jun 20211.31%5,878,374
Vanguard Extended Market Index Fund327,43229 Jun 20211.02%4,570,950
Columbia Fds Ser Tr I-Columbia Small Cap Value Fd I201,82329 Apr 20210.63%2,777,084
iShares NASDAQ Biotechnology ETF190,17429 Jun 20210.59%2,654,829
iShares Russell 2000 Growth ETF179,57529 Jun 20210.56%2,506,867
Fidelity Small Cap Index Fund178,73429 Jun 20210.56%2,495,126
JNL Series Trust-JNL/Multi Manager Small Cap GrowthFd167,35029 Jun 20210.52%2,336,206
Columbia Fds Var Ins Tr-Columbia Var Port-Small Cap Value Fd151,85329 Jun 20210.47%2,119,867