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Spero Therapeutics, Inc. (SPRO)

NasdaqGS - NasdaqGS Real-time price. Currency in USD
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1.5900+0.0200 (+1.27%)
At close: 04:00PM EDT
1.5900 0.00 (0.00%)
After hours: 05:25PM EDT
Insider roster
Insider transactions

Major holders

Currency in USD
Breakdown
20.16%% of shares held by all insiders
25.92%% of shares held by institutions
32.47%% of float held by institutions
59Number of institutions holding shares

Top institutional holders

HolderSharesDate reported% outValue
Anson Funds Management LP3,750,45030 Mar 20246.96%5,963,215
Vanguard Group Inc1,653,43230 Mar 20243.07%2,628,956
Adar1 Capital Management, LLC 926,92930 Mar 20241.72%1,473,817
Alphabet Inc.889,97930 Mar 20241.65%1,415,066
Murchinson Ltd.873,91030 Mar 20241.62%1,389,516
Renaissance Technologies, LLC854,46030 Mar 20241.59%1,358,591
Acadian Asset Management. LLC762,59830 Mar 20241.42%1,212,530
Atlas Venture Life Science Advisors, LLC 607,61330 Mar 20241.13%966,104
Blackrock Inc.476,89630 Mar 20240.88%758,264
Geode Capital Management, LLC469,44130 Mar 20240.87%746,411

Top mutual fund holders

HolderSharesDate reported% outValue
Vanguard Total Stock Market Index Fund958,77530 Dec 20231.78%1,524,452
Vanguard Extended Market Index Fund587,34230 Dec 20231.09%933,873
Fidelity Extended Market Index Fund239,52530 Mar 20240.44%380,844
Bridgeway Funds Inc-Ultra Small Company Market Fund134,80030 Dec 20230.25%214,332
iShares Micro Cap ETF89,91830 Mar 20240.17%142,969
Fidelity Total Market Index Fund67,29530 Mar 20240.12%106,999
Fidelity Series Total Market Index Fund59,96530 Mar 20240.11%95,344
Schwab Capital Trust-Total Stock Market Index Fund28,56530 Jan 20240.05%45,418
Vanguard Institutional Index-Inst Total Stock Market Ind19,68930 Dec 20230.04%31,305
Fidelity NASDAQ Composite Index Fund23,67530 Mar 20240.04%37,643