Type / Class
Equity / Common Stock, par value $0.001 per share
Shares outstanding
55,705,828
Total 13F shares
15,108,016
Share change
-569,369
Total reported value
$10,875,927
Put/Call ratio
1.1%
Price per share
$0.72
Number of holders
38
Value change
-$477,160
Number of buys
10
Number of sells
22

Institutional Holders of Spero Therapeutics, Inc. - Common Stock, par value $0.001 per share (SPRO) as of Q1 2025

As of 31 Mar 2025, Spero Therapeutics, Inc. - Common Stock, par value $0.001 per share (SPRO) was held by 38 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 15,108,016 shares. The largest 10 holders included Anson Funds Management LP, Pfizer Inc, VANGUARD GROUP INC, RENAISSANCE TECHNOLOGIES LLC, Alphabet Inc., Murchinson Ltd., ACADIAN ASSET MANAGEMENT LLC, ADAR1 Capital Management, LLC, GEODE CAPITAL MANAGEMENT, LLC, and BlackRock, Inc.. This page lists 38 institutional shareholders reporting positions in this security for the Q1 2025 filing period.
Investor Option Weight % Change % Value $ * Price Shares Share Change Activity Report Period
* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.