BCYC — Bicycle Therapeutics PLC

Ownership history in Siren, L.L.C.  ·  5 quarters on record

This page tracks every 13F SEC filing in which Siren, L.L.C. reported a position in Bicycle Therapeutics PLC (BCYC). 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
1.14% (2024 Q4)
Avg. % of fund
0.75%
First filed
2024 Q4
Last filed
2025 Q4
Quarters held
5
Quarter Action Shares Change Chg % % of Fund Mkt Value Price (EOQ)
2025 Q4 UNCHANGED 2,012,752 — 0% 0.43% $14.3M $7.08
2025 Q3 UNCHANGED 2,012,752 — 0% 0.61% $15.6M $7.74
2025 Q2 ADDED 2,012,752 +200,000 +11.0% 0.72% $14.0M $6.95
2025 Q1 REDUCED 1,812,752 -26,646 -1.4% 0.88% $15.4M $8.49
2024 Q4 INITIATED 1,839,398 — — 1.14% $25.8M $14.00
% of Fund (quarterly)    BCYC price (monthly, adj. close)

Other funds also holding BCYC

As of 2025 Q4 — sorted by position size

FCPM III SERVICES B.V. 3.22% Birchview Capital, LP 3Y 7Y 1.92% GSK plc 1.36% FLAX POND CAPITAL, LLC 0.91% Rangeley Capital, LLC 0.78% BAKER BROS. ADVISORS LP 3Y 7Y 0.45% MONIMUS CAPITAL MANAGEMENT, LP 0.44% Nan Fung Group Holdings Ltd 3Y 0.44% Long Focus Capital Management, LLC 3Y 0.3% PLATINUM INVESTMENT MANAGEMENT LTD 3Y 7Y 0.3%
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