Fairmount Funds Management LLC
CIK 1802528 · Holdings on Dec 31, 2025 · First reported Feb 17, 2026
Top ten holdings
Q4 2025- COGT24.34%
- APGE11.77%
- SYRE10.02%
- VRDN9.27%
- ORKA8.55%
- DNTH6.70%
- ZBIO6.11%
- NUVL5.57%
- JBIO5.35%
- ELVN4.35%
Share classes counted separately92.03%
Portfolio value by quarter
What changed this quarter?
Within preview · weight change- COGTWeight increased · +12.71 pp11.63% → 24.34%Shares 0 (0.00%)
- DNTHWeight decreased · -5.01 pp11.71% → 6.70%Shares -1.17M (-35.38%)
- APGEWeight increased · +4.45 pp7.32% → 11.77%Shares 0 (0.00%)
Weight = security value ÷ total reported holdings value. Changes are in percentage points; price moves also affect weights, so they are not trade sizes.
Top 10 holdings 13
USD · B = billion · M = million; expand a row for exact values| # | Security | Value | Weight | Quantity | Weight / quantity change | Activity | |
|---|---|---|---|---|---|---|---|
| 01 | COGTCOGENT BIOSCIENCES INC View history and evidence | $319.80M | 24.34% | 9.00M shares | 11.63% → 24.34%+12.71 pp 0 (0.00%) | Unchanged | ↗▾ |
| 02 | APGEAPOGEE THERAPEUTICS INC View history and evidence | $154.63M | 11.77% | 2.05M shares | 7.32% → 11.77%+4.45 pp 0 (0.00%) | Unchanged | ↗▾ |
| 03 | SYRESPYRE THERAPEUTICS INCCOM NEW View history and evidence | $131.63M | 10.02% | 4.02M shares | 6.06% → 10.02%+3.96 pp 0 (0.00%) | Unchanged | ↗▾ |
| 04 | VRDNVIRIDIAN THERAPEUTICS INC View history and evidence | $121.82M | 9.27% | 3.91M shares | 6.72% → 9.27%+2.55 pp +454.55K (+13.14%) | Added | ↗▾ |
| 05 | ORKAORUKA THERAPEUTICS INC View history and evidence | $112.31M | 8.55% | 3.71M shares | 6.41% → 8.55%+2.14 pp 0 (0.00%) | Unchanged | ↗▾ |
| 06 | DNTHDIANTHUS THERAPEUTICS INC View history and evidence | $88.07M | 6.70% | 2.14M shares | 11.71% → 6.70%-5.01 pp -1.17M (-35.38%) | Reduced | ↗▾ |
| 07 | ZBIOZENAS BIOPHARMA INC View history and evidence | $80.21M | 6.11% | 2.21M shares | 3.78% → 6.11%+2.33 pp +316.22K (+16.71%) | Added | ↗▾ |
| 08 | NUVLNUVALENT INC-A View history and evidence | $73.19M | 5.57% | 727.56K shares | 5.66% → 5.57%-0.09 pp 0 (0.00%) | Unchanged | ↗▾ |
| 09 | JBIOJADE BIOSCIENCES INCCOM NEW View history and evidence | $70.26M | 5.35% | 4.55M shares | 2.50% → 5.35%+2.85 pp +1.33M (+41.40%) | Added | ↗▾ |
| 10 | ELVNENLIVEN THERAPEUTICS INC View history and evidence | $57.16M | 4.35% | 3.71M shares | 6.84% → 4.35%-2.49 pp 0 (0.00%) | Unchanged | ↗▾ |
Options overlay 0
No options reported this quarter.
Exited positions 4
| Security | Type | Shares out | Value out | Previous filing | This filing |
|---|---|---|---|---|---|
| AXSM AXSOME THERAPEUTICS INC | Non-derivative | -815,176 | -$99.00M | SEC filing ↗ | SEC filing ↗ |
| SRRK SCHOLAR ROCK HOLDING CORP | Non-derivative | -1,824,031 | -$67.93M | SEC filing ↗ | SEC filing ↗ |
| ABVX ABIVAX SA-ADR | Non-derivative | -713,434 | -$60.57M | SEC filing ↗ | SEC filing ↗ |
3 / 4 preview exits. Up to 30 exit records are previewed. Exit means absent from the current filing; execution date, price and proceeds are unknown.
Every number has a source.
CIK 1802528 · Period 2025-12-31
Data loaded 2026-09-23 · First reported 2026-02-17
Amendments and versions
{
"amendments_merged": null,
"prior_versions": null,
"cover_table_value": 1313784318
}Take these holdings further.
This page includes 13 of 13 reported holdings. Sign in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.
- Download CSV
- Earlier quarters
- Advanced screening & filtering
- API & AI access
＋ New accounts get free API credits to explore data beyond ownership filings.
For AI agents & developers
The initial HTML of this page carries its exact data as script#portfolio-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. This page lists 13 of 13 current positions (options included); totals and weights use the complete filing.
Without an account: the last 3 years, with the row caps stated on the page. A free account opens all history on file on these pages and the CSV of what a page shows. Rows beyond the caps and bulk retrieval go through the authenticated API / MCP.
MCP https://api.akkrudata.ai/mcp
get_institutional_portfolio
{"cik":"1802528","quarter":"2025Q4","page_size":100}
get_institutional_manager_history
{"cik":"1802528","page_size":100}Connect to MCP with OAuth and follow the returned pagination. Credits and usage limits depend on the account.
- MCP endpoint
- https://api.akkrudata.ai/mcp
- API / MCP documentation
- /documents
- llms.txt
- /llms.txt
Sources, coverage & how to read this data
Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.