ALRN Institutional Ownership & Shareholders
AILERON THERAPEUTICS INC (ALRN) is currently held by 60 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $41.93M based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Voss Capital, Lp is currently the largest disclosed institutional shareholder of ALRN tracked by InsiderSet, reporting ownership valued at approximately $5.47M in its June 30, 2026 SEC Form 13F filing.
The top 10 institutional shareholders tracked on this page collectively account for approximately 80% of the total disclosed ALRN value among the investors covered in this analysis. Major shareholders include Voss Capital, Lp, Cable Car Capital, Lp, Adar1 Capital Management, Llc, and several other long-term asset managers with concentrated positions in AILERON THERAPEUTICS INC (ALRN).
This page ranks the largest institutional ALRN shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
60
Total Reported Value
$41.93M
Largest Holder
Voss Capital, Lp
Largest Position
$5.47M
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
75
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Voss Capital, Lp | 0.27% | 5,261,921 | $5,472,398 | — | — | — | |
| Cable Car Capital, Lp | 0.12% | 5,195,000 | $5,402,800 | — | — | — | |
| Adar1 Capital Management, Llc | 0.22% | 4,500,000 | $4,680,000 | — | — | — | |
| Vanguard Capital Management Llc | 0.00% | 3,377,910 | $3,513,026 | — | — | — | |
| Bios Capital Management, Lp | 7.44% | 2,982,375 | $3,101,670 | — | — | — | |
| Ikarian Capital, Llc | 0.50% | 2,950,000 | $3,068,000 | — | — | — | |
| Great Point Partners Llc | 0.63% | 2,575,000 | $2,678,000 | — | — | — | |
| Citadel Advisors Llc | 0.00% | 2,438,711 | $2,536,259 | — | — | — | |
| Velan Capital Investment Management Lp | 1.08% | 1,700,000 | $1,768,000 | — | — | — | |
| Senvest Management, Llc | 0.04% | 1,230,895 | $1,280,131 | — | — | — | |
| Prosight Management, Lp | 0.20% | 1,100,000 | $1,144,000 | — | — | — | |
| Bleichroeder Lp | 0.19% | 1,000,000 | $1,040,000 | — | — | — | |
| Boothbay Fund Management, Llc | 0.02% | 889,450 | $925,028 | — | — | — | |
| Geode Capital Management, Llc | 0.00% | 733,139 | $762,540 | — | — | — | |
| University Of Texas/Texas Am Investment Management Co | 0.05% | 511,610 | $411,334 | — | — | — | |
| Vanguard Fiduciary Trust Co | 0.00% | 382,515 | $397,816 | — | — | — | |
| State Street Corp | 0.00% | 379,604 | $394,788 | — | — | — | |
| Empery Asset Management, Lp | 0.45% | 370,834 | $385,667 | — | — | — | |
| Blackrock, Inc. | 0.00% | 326,204 | $339,253 | — | — | — | |
| Texas Capital Bank Wealth Management Services Inc | 0.02% | 300,758 | $312,789 | — | — | — | |
| Sigma Planning Corp | 0.01% | 357,477 | $287,412 | — | — | — | |
| Sequoia Financial Advisors | 0.00% | 250,000 | $260,000 | — | — | — | |
| Gagnon Securities Llc | 0.05% | 229,070 | $238,233 | — | — | — | |
| Stonepine Capital Management, Llc | 0.17% | 218,038 | $226,760 | — | — | — | |
| Palogic Value Management, L.P. | 0.07% | 180,000 | $187,200 | — | — | — | |
| Northern Trust Corp | 0.00% | 159,720 | $166,109 | — | — | — | |
| Rock Creek Group Llc | 0.01% | 125,000 | $130,000 | — | — | — | |
| Corsair Capital Management, L.P. | 0.01% | 80,000 | $83,200 | — | — | — | |
| Goldman Sachs Group Inc | 0.00% | 79,785 | $82,976 | — | — | — | |
| Warberg Asset Management Llc | 0.02% | 96,000 | $78,038 | — | — | — | |
| Ubs Group Ag | 0.00% | 57,410 | $59,706 | — | — | — | |
| Mercer Global Advisors Inc | 0.00% | 50,461 | $52,479 | — | — | — | |
| Xtx Topco Ltd | 0.00% | 45,760 | $47,590 | — | — | — | |
| Exencial Wealth Advisors, Llc | 0.00% | 30,528 | $39,687 | — | — | — | |
| Americana Partners, Llc | 0.00% | 41,840 | $33,639 | — | — | — | |
| Qube Research & Technologies Ltd | 0.00% | 30,787 | $32,018 | — | — | — | |
| Ancora Advisors Llc | 0.00% | 30,000 | $31,200 | — | — | — | |
| Meridian Wealth Advisors, Llc | 0.00% | 28,486 | $29,625 | — | — | — | |
| Steelpeak Wealth, Llc | 0.00% | 33,000 | $26,532 | — | — | — | |
| Prime Capital Investment Advisors, Llc | 0.00% | 31,111 | $25,013 | — | — | — | |
| Savant Capital, Llc | 0.00% | 30,528 | $23,315 | — | — | — | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 19,000 | $19,760 | — | — | — |
| Gleason Group, Inc. | 0.00% | 22,389 | $18,001 | — | — | — | |
| Chicago Partners Investment Group Llc | 0.00% | 29,928 | $17,421 | — | — | — | |
| Sanders Morris Harris Llc | 0.00% | 20,000 | $16,080 | — | — | — | |
| Annandale Capital, Llc | 0.00% | 15,026 | $16,000 | — | — | — | |
| Morgan Stanley | 0.00% | 14,318 | $14,890 | — | — | — | |
| Cane Capital Partners, Llc | 0.01% | 18,000 | $14,472 | — | — | — | |
| Certuity, Llc | 0.00% | 17,500 | $14,070 | — | — | — | |
| Vanguard Global Advisers, Llc | 0.00% | 12,774 | $13,285 | — | — | — |
Frequently asked questions about ALRN
Who are the largest institutional holders of ALRN?
The largest institutional holders of ALRN reported in the latest SEC Form 13F filings include Voss Capital, Lp, Cable Car Capital, Lp, Adar1 Capital Management, Llc, Vanguard Capital Management Llc, and Bios Capital Management, Lp. InsiderSet ranks institutional holders by their latest reported ALRN position.
What is ALRN institutional ownership?
This page tracks ALRN positions reported by institutional investment managers through SEC Form 13F. AILERON THERAPEUTICS INC (ALRN) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own ALRN?
InsiderSet currently tracks 60 institutional managers reporting ALRN holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of ALRN shareholders.
How much ALRN stock do institutions own?
Institutional investment managers disclosed approximately $41.93M in ALRN holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was ALRN institutional ownership last updated?
The latest ALRN institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional ALRN holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its ALRN position after the reporting date.
Are institutions buying or selling ALRN?
Institutional buying and selling can be analyzed by comparing ALRN positions across consecutive 13F reporting periods. InsiderSet's ALRN Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View ALRN ownership changes.
How has ALRN institutional ownership changed over time?
InsiderSet tracks ALRN institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.