AILERON THERAPEUTICS INC (ALRN) Institutional Shareholders
AILERON THERAPEUTICS INC (ALRN) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $42.14M in ALRN holdings during the latest filing period.
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 79% 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
55
Total Reported Value
$42.14M
Largest Holder
Voss Capital, Lp
Largest Position
$5.47M
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
71
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 | 0.06% | 511,610 | $532,074 | — | — | — | |
| 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 | — | — | — | |
| Sigma Planning Corp | 0.01% | 353,677 | $367,824 | — | — | — | |
| Blackrock, Inc. | 0.00% | 326,204 | $339,253 | — | — | — | |
| Texas Capital Bank Wealth Management Services Inc | 0.02% | 300,758 | $312,789 | — | — | — | |
| 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 | — | — | — | |
| Warberg Asset Management Llc | 0.03% | 99,000 | $100,980 | — | — | — | |
| Corsair Capital Management, L.P. | 0.01% | 80,000 | $83,200 | — | — | — | |
| Goldman Sachs Group Inc | 0.00% | 79,785 | $82,976 | — | — | — | |
| 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 | — | — | — | |
| Americana Partners, Llc | 0.00% | 41,840 | $43,514 | — | — | — | |
| Exencial Wealth Advisors, Llc | 0.00% | 30,528 | $39,687 | — | — | — | |
| Prime Capital Investment Advisors, Llc | 0.00% | 36,111 | $37,555 | — | — | — | |
| Steelpeak Wealth, Llc | 0.00% | 33,000 | $34,320 | — | — | — | |
| Chicago Partners Investment Group Llc | 0.00% | 41,048 | $32,843 | — | — | — | |
| Qube Research & Technologies Ltd | 0.00% | 30,787 | $32,018 | — | — | — | |
| Meridian Wealth Advisors, Llc | 0.00% | 28,486 | $29,625 | — | — | — | |
| Savant Capital, Llc | 0.00% | 30,528 | $23,315 | — | — | — | |
| Gleason Group, Inc. | 0.00% | 22,389 | $23,285 | — | — | — | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 19,000 | $19,760 | — | — | — |
| Cane Capital Partners, Llc | 0.01% | 18,000 | $18,720 | — | — | — | |
| Annandale Capital, Llc | 0.00% | 15,026 | $16,000 | — | — | — | |
| Morgan Stanley | 0.00% | 14,318 | $14,890 | — | — | — | |
| Vanguard Global Advisers, Llc | 0.00% | 12,774 | $13,285 | — | — | — | |
| Cetera Investment Advisers | 0.00% | 11,742 | $12,212 | — | — | — | |
| Rockefeller Capital Management L.P. | 0.00% | 5,097 | $5,301 | — | — | — | |
| Barclays Plc | 0.00% | 2,570 | $2,673 | — | — | — |
Frequently asked questions about ALRN
Who owns the most ALRN stock?
The largest holders of ALRN are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for AILERON THERAPEUTICS INC (ALRN).
Is ALRN widely held by superinvestors?
Many widely followed stocks like ALRN appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly ALRN is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.