SPRO — SPERO THERAPEUTICS INC

Ownership history in Rangeley Capital, LLC  ·  1 quarter on record

This page tracks every 13F SEC filing in which Rangeley Capital, LLC 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
0.05% (2025 Q3)
Avg. % of fund
0.05%
First filed
2025 Q3
Last filed
2025 Q3
Quarters held
1
Quarter Action Shares Change Chg % % of Fund Mkt Value Price (EOQ)
2025 Q3 INITIATED 30,000 — — 0.05% $56K $1.88
% 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% Alphabet Inc. 3Y 0.08% 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%
← Back to Rangeley Capital, LLC Holdings