SPRO — Spero Therapeutics Inc.

Ownership history in Alphabet Inc.  ·  14 quarters on record

This page tracks every 13F SEC filing in which Alphabet Inc. reported a position in Spero Therapeutics Inc. (SPRO). Data includes quarterly share count, position size as % of portfolio, estimated market value, and end-of-quarter stock price — sourced directly from SEC EDGAR 13F filings.

Peak position
0.12% (2025 Q2)
Avg. % of fund
0.07%
First filed
2022 Q3
Last filed
2025 Q4
Quarters held
14
Quarter Action Shares Change Chg % % of Fund Mkt Value Price (EOQ)
2025 Q4 UNCHANGED 889,979 — 0% 0.08% $2.1M $2.33
2025 Q3 UNCHANGED 889,979 — 0% 0.07% $1.7M $1.88
2025 Q2 UNCHANGED 889,979 — 0% 0.12% $2.6M $2.90
2025 Q1 UNCHANGED 889,979 — 0% 0.04% $641K $0.72
10 older quarters hidden  —  Sign in free or upgrade to Premium to see full history
% of Fund (quarterly)    SPRO price (monthly, adj. close)

Other funds also holding SPRO

As of 2025 Q4 — sorted by position size

GSK plc 2.68% PFIZER INC 2.33% INTREPID FAMILY OFFICE LLC 3Y 0.33% Anson Funds Management LP 3Y 7Y 0.14% Ionic Capital Management LLC 3Y 7Y 0.06% Informed Momentum Co LLC 3Y 7Y 0.06% GSA CAPITAL PARTNERS LLP 3Y 7Y 0.04% ADAR1 Capital Management, LLC 0.02% Shay Capital LLC 3Y 0.01% Torrey Growth & Income Advisors 0.01%
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