About this data
What it is
An investor who owns more than 5% of a public company must say so. Investors who may try to influence the company, such as activists, file the longer Schedule 13D; passive holders file the shorter Schedule 13G.
Who files it
The investor, within days of crossing 5%, and again whenever the stake changes materially.
How current
We collect new filings throughout the day on SEC business days.
Worth knowing
13G filings are far more common than 13D. A 13D usually means the investor intends to push for changes, so it tends to get more attention.

All of this comes from public filings.

Filings per day, last 30 days

0200400600800Oct 17 · 13D (activist): 0Oct 17 · 13G (passive): 0Oct 17Oct 18 · 13D (activist): 0Oct 18 · 13G (passive): 0Oct 19 · 13D (activist): 13Oct 19 · 13G (passive): 75Oct 20 · 13D (activist): 16Oct 20 · 13G (passive): 34Oct 21 · 13D (activist): 11Oct 21 · 13G (passive): 31Oct 21Oct 22 · 13D (activist): 16Oct 22 · 13G (passive): 48Oct 23 · 13D (activist): 13Oct 23 · 13G (passive): 24Oct 24 · 13D (activist): 0Oct 24 · 13G (passive): 0Oct 25 · 13D (activist): 0Oct 25 · 13G (passive): 0Oct 25Oct 26 · 13D (activist): 19Oct 26 · 13G (passive): 25Oct 27 · 13D (activist): 16Oct 27 · 13G (passive): 380Oct 28 · 13D (activist): 22Oct 28 · 13G (passive): 60Oct 29 · 13D (activist): 16Oct 29 · 13G (passive): 47Oct 29Oct 30 · 13D (activist): 16Oct 30 · 13G (passive): 343Oct 31 · 13D (activist): 0Oct 31 · 13G (passive): 0Nov 1 · 13D (activist): 0Nov 1 · 13G (passive): 0Nov 2 · 13D (activist): 20Nov 2 · 13G (passive): 36Nov 2Nov 3 · 13D (activist): 22Nov 3 · 13G (passive): 45Nov 4 · 13D (activist): 19Nov 4 · 13G (passive): 67Nov 5 · 13D (activist): 15Nov 5 · 13G (passive): 311Nov 6 · 13D (activist): 40Nov 6 · 13G (passive): 191Nov 6Nov 7 · 13D (activist): 0Nov 7 · 13G (passive): 0Nov 8 · 13D (activist): 0Nov 8 · 13G (passive): 0Nov 9 · 13D (activist): 40Nov 9 · 13G (passive): 140Nov 10 · 13D (activist): 27Nov 10 · 13G (passive): 289Nov 10Nov 11 · 13D (activist): 0Nov 11 · 13G (passive): 0Nov 12 · 13D (activist): 34Nov 12 · 13G (passive): 277Nov 13 · 13D (activist): 26Nov 13 · 13G (passive): 690Nov 14 · 13D (activist): 0Nov 14 · 13G (passive): 0Nov 14Nov 15 · 13D (activist): 0Nov 15 · 13G (passive): 0
0200400600800Oct 17 · 13D (activist): 0Oct 17 · 13G (passive): 0Oct 17Oct 18 · 13D (activist): 0Oct 18 · 13G (passive): 0Oct 19 · 13D (activist): 13Oct 19 · 13G (passive): 75Oct 20 · 13D (activist): 16Oct 20 · 13G (passive): 34Oct 21 · 13D (activist): 11Oct 21 · 13G (passive): 31Oct 21Oct 22 · 13D (activist): 16Oct 22 · 13G (passive): 48Oct 23 · 13D (activist): 13Oct 23 · 13G (passive): 24Oct 24 · 13D (activist): 0Oct 24 · 13G (passive): 0Oct 25 · 13D (activist): 0Oct 25 · 13G (passive): 0Oct 25Oct 26 · 13D (activist): 19Oct 26 · 13G (passive): 25Oct 27 · 13D (activist): 16Oct 27 · 13G (passive): 380Oct 28 · 13D (activist): 22Oct 28 · 13G (passive): 60Oct 29 · 13D (activist): 16Oct 29 · 13G (passive): 47Oct 29Oct 30 · 13D (activist): 16Oct 30 · 13G (passive): 343Oct 31 · 13D (activist): 0Oct 31 · 13G (passive): 0Nov 1 · 13D (activist): 0Nov 1 · 13G (passive): 0Nov 2 · 13D (activist): 20Nov 2 · 13G (passive): 36Nov 2Nov 3 · 13D (activist): 22Nov 3 · 13G (passive): 45Nov 4 · 13D (activist): 19Nov 4 · 13G (passive): 67Nov 5 · 13D (activist): 15Nov 5 · 13G (passive): 311Nov 6 · 13D (activist): 40Nov 6 · 13G (passive): 191Nov 6Nov 7 · 13D (activist): 0Nov 7 · 13G (passive): 0Nov 8 · 13D (activist): 0Nov 8 · 13G (passive): 0Nov 9 · 13D (activist): 40Nov 9 · 13G (passive): 140Nov 10 · 13D (activist): 27Nov 10 · 13G (passive): 289Nov 10Nov 11 · 13D (activist): 0Nov 11 · 13G (passive): 0Nov 12 · 13D (activist): 34Nov 12 · 13G (passive): 277Nov 13 · 13D (activist): 26Nov 13 · 13G (passive): 690Nov 14 · 13D (activist): 0Nov 14 · 13G (passive): 0Nov 14Nov 15 · 13D (activist): 0Nov 15 · 13G (passive): 0

13D (activist) 13G (passive)

Latest ownership filings

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Showing: ticker IPSC

Latest ownership filings
FiledScheduleBoth report a stake of more than 5%. A 13D is filed by investors who may try to influence the company, such as activists; a 13G by passive holders.CompanyInvestorShares% of sharesFiling
May 15, 2026SCHEDULE 13GIPSC
Century Therapeutics, Inc.
Roderick Wong13.04M7.1%SCHEDULE 13G ↗
May 15, 2026SCHEDULE 13GIPSC
Century Therapeutics, Inc.
RTW Investments, LP13.04M7.1%SCHEDULE 13G ↗
May 15, 2026SCHEDULE 13G/A (amended)IPSC
Century Therapeutics, Inc.
Steven A. Cohen5.96M3.3%SCHEDULE 13G/A ↗
May 15, 2026SCHEDULE 13G/A (amended)IPSC
Century Therapeutics, Inc.
Point72 Capital Advisors, Inc.5.96M3.3%SCHEDULE 13G/A ↗
May 15, 2026SCHEDULE 13G/A (amended)IPSC
Century Therapeutics, Inc.
Point72 Asset Management, L.P.5.96M3.3%SCHEDULE 13G/A ↗
Feb 17, 2026SCHEDULE 13G/A (amended)IPSC
Century Therapeutics, Inc.
Steven A. Cohen5.96M6.8%SCHEDULE 13G/A ↗
Feb 17, 2026SCHEDULE 13G/A (amended)IPSC
Century Therapeutics, Inc.
Point72 Capital Advisors, Inc.5.96M6.8%SCHEDULE 13G/A ↗
Feb 17, 2026SCHEDULE 13G/A (amended)IPSC
Century Therapeutics, Inc.
Point72 Asset Management, L.P.5.96M6.8%SCHEDULE 13G/A ↗
Jan 16, 2026SCHEDULE 13GIPSC
Century Therapeutics, Inc.
Michael Kramarz13.04M7.1%SCHEDULE 13G ↗
Jan 16, 2026SCHEDULE 13GIPSC
Century Therapeutics, Inc.
Robert Egen Atkinson13.04M7.1%SCHEDULE 13G ↗
Jan 16, 2026SCHEDULE 13GIPSC
Century Therapeutics, Inc.
Commodore Capital Master LP13.04M7.1%SCHEDULE 13G ↗
Jan 16, 2026SCHEDULE 13GIPSC
Century Therapeutics, Inc.
Commodore Capital LP13.04M7.1%SCHEDULE 13G ↗
Jan 16, 2026SCHEDULE 13GIPSC
Century Therapeutics, Inc.
Bong Y. Koh13.04M7.1%SCHEDULE 13G ↗
Jan 16, 2026SCHEDULE 13GIPSC
Century Therapeutics, Inc.
Nimish Shah13.04M7.1%SCHEDULE 13G ↗
Jan 16, 2026SCHEDULE 13GIPSC
Century Therapeutics, Inc.
VHCP Management EG, LLC13.04M7.1%SCHEDULE 13G ↗
Jan 16, 2026SCHEDULE 13GIPSC
Century Therapeutics, Inc.
VHCP Management III, LLC13.04M7.1%SCHEDULE 13G ↗
Jan 16, 2026SCHEDULE 13GIPSC
Century Therapeutics, Inc.
Venrock Healthcare Capital Partners EG, L.P.13.04M7.1%SCHEDULE 13G ↗
Jan 16, 2026SCHEDULE 13GIPSC
Century Therapeutics, Inc.
VHCP Co-Investment Holdings III, LLC13.04M7.1%SCHEDULE 13G ↗
Jan 16, 2026SCHEDULE 13GIPSC
Century Therapeutics, Inc.
Venrock Healthcare Capital Partners III, L.P.13.04M7.1%SCHEDULE 13G ↗
Jan 16, 2026SCHEDULE 13GIPSC
Century Therapeutics, Inc.
RA Capital Healthcare Fund, L.P.17.94M9.9%SCHEDULE 13G ↗
Jan 16, 2026SCHEDULE 13GIPSC
Century Therapeutics, Inc.
Rajeev Shah17.94M9.9%SCHEDULE 13G ↗
Jan 16, 2026SCHEDULE 13GIPSC
Century Therapeutics, Inc.
Peter Kolchinsky17.94M9.9%SCHEDULE 13G ↗
Jan 16, 2026SCHEDULE 13GIPSC
Century Therapeutics, Inc.
RA Capital Management, L.P.17.94M9.9%SCHEDULE 13G ↗
Jan 15, 2026SCHEDULE 13GIPSC
Century Therapeutics, Inc.
Chen Yu17.75M9.9%SCHEDULE 13G ↗
Jan 15, 2026SCHEDULE 13GIPSC
Century Therapeutics, Inc.
TCG Crossover Fund III, L.P.8.88M4.9%SCHEDULE 13G ↗
Jan 15, 2026SCHEDULE 13GIPSC
Century Therapeutics, Inc.
TCG Crossover GP III, LLC8.88M4.9%SCHEDULE 13G ↗
Jan 15, 2026SCHEDULE 13GIPSC
Century Therapeutics, Inc.
TCG Crossover Fund II, L.P.8.88M4.9%SCHEDULE 13G ↗
Jan 15, 2026SCHEDULE 13GIPSC
Century Therapeutics, Inc.
TCG Crossover GP II, LLC8.88M4.9%SCHEDULE 13G ↗
Jan 15, 2026SCHEDULE 13GIPSC
Century Therapeutics, Inc.
Deep Track Special Opportunities Fund, LP.2.88M1.6%SCHEDULE 13G ↗
Jan 15, 2026SCHEDULE 13GIPSC
Century Therapeutics, Inc.
David Kroin13.49M7.3%SCHEDULE 13G ↗
Jan 15, 2026SCHEDULE 13GIPSC
Century Therapeutics, Inc.
Deep Track Biotechnology Master Fund, Ltd.10.61M5.8%SCHEDULE 13G ↗
Jan 15, 2026SCHEDULE 13GIPSC
Century Therapeutics, Inc.
Deep Track Capital, LP13.49M7.3%SCHEDULE 13G ↗
Jan 5, 2026SCHEDULE 13GIPSC
Century Therapeutics, Inc.
Steven A. Cohen4.73M5.4%SCHEDULE 13G ↗
Jan 5, 2026SCHEDULE 13GIPSC
Century Therapeutics, Inc.
Point72 Capital Advisors, Inc.4.73M5.4%SCHEDULE 13G ↗
Jan 5, 2026SCHEDULE 13GIPSC
Century Therapeutics, Inc.
Point72 Asset Management, L.P.4.73M5.4%SCHEDULE 13G ↗
Nov 14, 2025SCHEDULE 13G/A (amended)IPSC
Century Therapeutics, Inc.
Bain Capital Life Sciences Opportunities III, LP3.54M4.1%SCHEDULE 13G/A ↗
May 15, 2025SCHEDULE 13G/A (amended)IPSC
Century Therapeutics, Inc.
Eli Casdin3.21M3.7%SCHEDULE 13G/A ↗
May 15, 2025SCHEDULE 13G/A (amended)IPSC
Century Therapeutics, Inc.
Casdin Capital, LLC3.21M3.7%SCHEDULE 13G/A ↗
Feb 14, 2025SCHEDULE 13G/A (amended)IPSC
Century Therapeutics, Inc.
Bong Y Koh3.96M4.7%SCHEDULE 13G/A ↗
Feb 14, 2025SCHEDULE 13G/A (amended)IPSC
Century Therapeutics, Inc.
Nimish Shah3.96M4.7%SCHEDULE 13G/A ↗
Feb 14, 2025SCHEDULE 13G/A (amended)IPSC
Century Therapeutics, Inc.
VHCP Management EG, LLC3.96M4.7%SCHEDULE 13G/A ↗
Feb 14, 2025SCHEDULE 13G/A (amended)IPSC
Century Therapeutics, Inc.
VHCP Management III, LLC3.96M4.7%SCHEDULE 13G/A ↗
Feb 14, 2025SCHEDULE 13G/A (amended)IPSC
Century Therapeutics, Inc.
Venrock Healthcare Capital Partners EG, L.P.3.96M4.7%SCHEDULE 13G/A ↗
Feb 14, 2025SCHEDULE 13G/A (amended)IPSC
Century Therapeutics, Inc.
VHCP Co-Investment Holdings III, LLC3.96M4.7%SCHEDULE 13G/A ↗
Feb 14, 2025SCHEDULE 13G/A (amended)IPSC
Century Therapeutics, Inc.
Venrock Healthcare Capital Partners III, L.P.3.96M4.7%SCHEDULE 13G/A ↗

45 items, most recent first (up to 50). Every row links to its original filing. Updated Nov 15, 2026, 6:20 PM EST.

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