Third Harmonic BioTHRD
13F holders, Q3 2025 (September 30)18holders −88
5new positions
94sold out
$0.28avg. 13F price*
At the end of Q3 2025, 18 institutions reported holding Third Harmonic Bio Inc. (THRD) in their 13F filings, down 88 from Q2 2025. 5 opened new positions and 94 sold out. The largest holders were Dimensional Fund Advisors LP ($505K), Cantor Fitzgerald, L. P. ($464K) and Rhumbline Advisers ($111K).
- Company
- Third Harmonic Bio Inc.
- CUSIP
- 88427A107
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 5 | $473K |
| Exits | 94 | $188.4M |
All 13F filers, Q2 2025 → Q3 2025: 338,478 shares bought and 34,712,148 shares sold, net −34,373,670 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 18 holders
| Dimensional Fund Advisors LP | 0.00% | No change | 93,939 | $505K |
| Cantor Fitzgerald, L. P. | 0.01% | New | 86,325 | $464K |
| Rhumbline Advisers | 0.00% | Reduce -38.5% | 20,707 | $111K |
| MetLife Investment Management, LLC | 0.00% | No change | 16,859 | $91K |
| JBF Capital, Inc. | 0.00% | New | 250,000 | $8K |
| Russell Investments Group, Ltd. | 0.00% | Add +198.5% | 803 | $4K |
| Amalgamated Bank | 0.00% | No change | 665 | $4K |
| GAMMA Investing LLC | 0.00% | Add +336.2% | 458 | $2K |
| Optiver Holding B.V. | 0.00% | New | 196 | $1K |
| Nuveen, LLC | 0.00% | No change | 27,963 | $839 |
| Ameritas Investment Partners, Inc. | 0.00% | No change | 2,017 | $61 |
| SBI Securities Co., Ltd. | 0.00% | No change | 20 | $1 |
| Caldwell Sutter Capital, Inc. | 0.00% | New | 1,000 | $0 |
| Meeder Asset Management Inc. | 0.00% | No change | 2,083 | $0 |
| Nisa Investment Advisors, LLC | 0.00% | No change | 3,423 | $0 |
| BML Capital Management, LLC | 0.00% | No change | 3,824,417 | $0 |
| IFP Advisors, Inc | 0.00% | Add +0.0% | 1 | $0 |
| Osaic Holdings, Inc. | 0.00% | New | 69 | $0 |
"% of holder's portfolio" is THRD's weight in each manager's 13F, not the share of Third Harmonic Bio Inc. the manager owns.