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Spero Therapeutics, Inc. (SPRO)

NasdaqGS - NasdaqGS Real-time price. Currency in USD
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1.5680+0.0380 (+2.48%)
As of 10:32AM EDT. Market open.
Insider roster
Insider transactions

Major holders

Currency in USD
Breakdown
20.38%% of shares held by all insiders
26.12%% of shares held by institutions
32.80%% of float held by institutions
59Number of institutions holding shares

Top institutional holders

HolderSharesDate reported% outValue
Anson Funds Management LP4,297,69930 Dec 20237.98%6,738,791
Vanguard Group Inc1,643,75730 Dec 20233.05%2,577,410
Adar1 Capital Management, LLC 1,067,71130 Dec 20231.98%1,674,170
Atlas Venture Life Science Advisors, LLC 1,013,43830 Dec 20231.88%1,589,070
Alphabet Inc.889,97930 Dec 20231.65%1,395,487
Murchinson Ltd.862,70030 Dec 20231.60%1,352,713
Renaissance Technologies, LLC547,46530 Dec 20231.02%858,425
Blackrock Inc.480,59930 Dec 20230.89%753,579
Novo Holdings A/S468,90230 Dec 20230.87%735,238
Geode Capital Management, LLC412,70730 Dec 20230.77%647,124

Top mutual fund holders

HolderSharesDate reported% outValue
Vanguard Total Stock Market Index Fund958,77530 Dec 20231.78%1,503,359
Vanguard Extended Market Index Fund587,34230 Dec 20231.09%920,952
Fidelity Extended Market Index Fund239,52528 Feb 20240.44%375,575
Bridgeway Funds Inc-Ultra Small Company Market Fund134,80030 Dec 20230.25%211,366
iShares Micro Cap ETF96,54428 Feb 20240.18%151,380
Fidelity Total Market Index Fund67,56328 Feb 20240.13%105,938
Fidelity Series Total Market Index Fund59,96528 Feb 20240.11%94,025
Schwab Capital Trust-Total Stock Market Index Fund28,56530 Jan 20240.05%44,789
Vanguard Institutional Index-Inst Total Stock Market Ind19,68930 Dec 20230.04%30,872
Fidelity NASDAQ Composite Index Fund23,67528 Feb 20240.04%37,122