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Spero Therapeutics, Inc. (SPRO)

NasdaqGS - NasdaqGS Real-time price. Currency in USD
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1.5300-0.1200 (-7.27%)
As of 10:28AM EDT. Market open.

Major holders

Currency in USD
16.06%% of shares held by all insiders
58.64%% of shares held by institutions
69.87%% of float held by institutions
135Number of institutions holding shares

Top institutional holders

HolderSharesDate reported% outValue
Aquilo Capital Management, LLC4,964,18130 Dec 202115.16%79,476,537
Blackrock Inc.1,794,08130 Mar 20225.48%15,608,504
BVF Inc.1,585,61530 Dec 20214.84%25,385,696
Atlas Venture Associates IX, LLC1,376,96830 Mar 20224.20%11,979,621
Vanguard Group, Inc. (The)1,351,37830 Dec 20214.13%21,635,561
Rock Springs Capital Management, LP945,31330 Dec 20212.89%15,134,461
State Street Corporation843,95530 Dec 20212.58%13,511,719
Artal Group S.A.500,00030 Mar 20221.53%4,350,000
Novo Holdings A/S468,90230 Dec 20211.43%7,507,121
Geode Capital Management, LLC457,18430 Dec 20211.40%7,319,515

Top mutual fund holders

HolderSharesDate reported% outValue
Vanguard Total Stock Market Index Fund677,88830 Dec 20212.07%10,852,986
iShares Russell 2000 ETF557,03930 Jan 20221.70%6,612,052
SPDR (R) Ser Tr-SPDR (R) S&P (R) Biotech ETF409,16330 Jan 20221.25%4,856,764
Vanguard Extended Market Index Fund360,74730 Dec 20211.10%5,775,559
Columbia Fds Ser Tr I-Columbia Small Cap Value Fd I236,72130 Jan 20220.72%2,809,878
iShares NASDAQ Biotechnology ETF199,32230 Jan 20220.61%2,365,952
iShares Russell 2000 Growth ETF181,83530 Jan 20220.56%2,158,381
Fidelity Small Cap Index Fund177,63827 Feb 20220.54%1,705,324
JNL Series Trust-JNL/Multi Manager Small Cap GrowthFd173,37030 Dec 20210.53%2,775,653
Fidelity Extended Market Index Fund154,14727 Feb 20220.47%1,479,811