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Spero Therapeutics, Inc. (SPRO)

NasdaqGS - NasdaqGS Real-time price. Currency in USD
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12.41-0.79 (-5.98%)
As of 12:18PM EST. Market open.

Major holders

Currency in USD
16.33%% of shares held by all insiders
57.62%% of shares held by institutions
68.87%% of float held by institutions
137Number of institutions holding shares

Top institutional holders

HolderSharesDate reported% outValue
Aquilo Capital Management, LLC4,563,68829 Sep 202114.12%84,017,496
BVF Inc.1,809,35229 Sep 20215.60%33,310,170
Blackrock Inc.1,802,52829 Sep 20215.58%33,184,540
Atlas Venture Associates IX, LLC1,376,96829 Sep 20214.26%25,349,980
Vanguard Group, Inc. (The)1,292,49829 Sep 20214.00%23,794,888
Rock Springs Capital Management, LP941,54329 Sep 20212.91%17,333,806
State Street Corporation802,69129 Sep 20212.48%14,777,541
Granahan Investment Management Inc.555,61429 Sep 20211.72%10,228,853
Artal Group S.A.500,00029 Sep 20211.55%9,205,000
Novo Holdings A/S468,90229 Sep 20211.45%8,632,485

Top mutual fund holders

HolderSharesDate reported% outValue
Vanguard Total Stock Market Index Fund732,74029 Sep 20212.27%13,489,743
iShares Russell 2000 ETF565,59330 Oct 20211.75%9,931,813
SPDR (R) Ser Tr-SPDR (R) S&P (R) Biotech ETF330,27229 Sep 20211.02%6,080,307
Vanguard Extended Market Index Fund329,62329 Sep 20211.02%6,068,359
JNL Series Trust-JNL/Multi Manager Small Cap GrowthFd265,65029 Sep 20210.82%4,890,616
iShares NASDAQ Biotechnology ETF200,65530 Oct 20210.62%3,523,501
Columbia Fds Ser Tr I-Columbia Small Cap Value Fd I185,22830 Oct 20210.57%3,252,603
Fidelity Small Cap Index Fund184,03330 Oct 20210.57%3,231,619
iShares Russell 2000 Growth ETF178,67130 Oct 20210.55%3,137,462
Columbia Fds Var Ins Tr-Columbia Var Port-Small Cap Value Fd160,87129 Sep 20210.50%2,961,635