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Spero Therapeutics, Inc. (SPRO)

NasdaqGS - NasdaqGS Real-time price. Currency in USD
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0.9037+0.1237 (+15.86%)
At close: 04:00PM EDT
0.8850 -0.02 (-2.07%)
After hours: 06:29PM EDT
Insider roster
Insider transactions

Major holders

Currency in USD
Breakdown
15.00%% of shares held by all insiders
54.08%% of shares held by institutions
63.62%% of float held by institutions
123Number of institutions holding shares

Top institutional holders

HolderSharesDate reported% outValue
Aquilo Capital Management, LLC5,281,50430 Mar 202215.06%4,772,895
BVF Inc.1,585,61530 Mar 20224.52%1,432,920
Atlas Venture Associates IX, LLC1,376,96829 Jun 20223.93%1,244,365
Vanguard Group, Inc. (The)1,245,99229 Jun 20223.55%1,126,002
Atlas Venture Life Science Advisors, LLC 1,031,16029 Jun 20222.94%931,859
Rock Springs Capital Management, LP990,91330 Mar 20222.83%895,488
Renaissance Technologies, LLC939,01729 Jun 20222.68%848,589
Blackrock Inc.690,75329 Jun 20221.97%624,233
Ameriprise Financial, Inc.586,64230 Mar 20221.67%530,148
State Street Corporation497,18530 Mar 20221.51%449,306
Artal Group S.A.500,00029 Jun 20221.43%451,849

Top mutual fund holders

HolderSharesDate reported% outValue
Vanguard Total Stock Market Index Fund677,88830 Mar 20222.07%612,607
iShares Russell 2000 ETF538,29330 May 20221.64%486,455
Vanguard Extended Market Index Fund387,84930 Mar 20221.18%350,499
Columbia Fds Ser Tr I-Columbia Small Cap Value Fd I382,87729 Apr 20221.09%346,005
iShares Russell 2000 Growth ETF195,84730 May 20220.60%176,986
iShares NASDAQ Biotechnology ETF193,10229 Jun 20220.59%174,506
Fidelity Small Cap Index Fund171,98930 May 20220.49%155,426
Fidelity Extended Market Index Fund162,77130 May 20220.46%147,096
Columbia Fds Var Ins Tr-Columbia Var Port-Small Cap Value Fd156,05730 Mar 20220.45%141,028
DFA U.S. Small Cap Series115,45429 Apr 20220.33%104,335
Vanguard Health Care Index Fund84,97927 Feb 20220.26%76,795
DFA U.S. Micro Cap Series69,64329 Apr 20220.20%62,936
Vanguard Explorer Fund, Inc.54,30729 Apr 20220.15%49,077
Schwab Capital Trust-Small Cap Index Fund53,42729 Apr 20220.15%48,281
DFA U.S. Core Equity 2 Portfolio48,48329 Apr 20220.14%43,814
Fidelity Total Market Index Fund39,00430 May 20220.11%35,247