ABOS Institutional Ownership
Acumen Pharmaceuticals, Inc.
1W: +28.2%
1M: +1.3%
3M: -0.4%
YTD: +12.4%
1Y: +7.6%
3Y: -35.0%
5Y: -83.1%
$2.26
-0.01 (-0.44%)
After Hours: $2.28 (+0.02, +0.66%)
Weekly Expected Move ±11.7%
$2
$2
$2
$2
$2
Credit Risk of going bust: higher than 79% of companies Debt: 13.8% of company value Bonds: none of note held by US funds details ▾
Of US companies ranked in the third-riskiest tenth, about 1 in 140 filed for bankruptcy within a year (2020-2025).
If the stock fell to about $0.09 (down 96%), Acumen Pharmaceuticals, Inc. would be worth roughly what it owes.
Total debt $26.3M against a stock market value of $164.2M.
Distance to default 2.66 (Merton model): prices to 2026-10-26, balance sheet 2026-09-30, debt counted $23.3M (short-term plus half of long-term), stock volatility 79.9%; Altman Z'' -24.06. A ranking and a back-test, not a forecast.
US fund filings (SEC N-PORT) show under $25M of this company's bonds, so there is no bond page. Its debt may be bank loans or privately placed. How these are computed.
If the stock fell to about $0.09 (down 96%), Acumen Pharmaceuticals, Inc. would be worth roughly what it owes.
Total debt $26.3M against a stock market value of $164.2M.
Distance to default 2.66 (Merton model): prices to 2026-10-26, balance sheet 2026-09-30, debt counted $23.3M (short-term plus half of long-term), stock volatility 79.9%; Altman Z'' -24.06. A ranking and a back-test, not a forecast.
US fund filings (SEC N-PORT) show under $25M of this company's bonds, so there is no bond page. Its debt may be bank loans or privately placed. How these are computed.
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Institutional Ownership — ABOS
115
Institutional Holders
+25 vs prior quarter
0.0%
Ownership
+0.00pp
$127M
Total Invested
32
New Positions
21
Increased
32
Reduced
17
Closed
1.50
Put/Call Ratio
Ownership Trends
Top Institutional Holders (119 total)
| # | Holder | Shares | Value | Change | Change % | Holding Period | Filing |
|---|---|---|---|---|---|---|---|
| 1 | RA CAPITAL MANAGEMENT, L.P. | 20,992,669 | $47M | — | +0.0% | 20Q | SEC ↗ |
| 2 | Sands Capital Alternatives, LLC | 3,720,105 | $8M | — | +0.0% | 20Q | SEC ↗ |
| 3 | BlackRock, Inc. | 2,490,115 | $6M | +2,311,789 | +1296.4% | 8Q | SEC ↗ |
| 4 | Alyeska Investment Group, L.P. | 2,454,754 | $6M | — | +0.0% | 12Q | SEC ↗ |
| 5 | FRANKLIN RESOURCES INC | 2,305,096 | $5M | — | +0.0% | 12Q | SEC ↗ |
| 6 | ADAR1 Capital Management, LLC | 2,111,334 | $5M | -45,000 | -2.1% | 7Q | SEC ↗ |
| 7 | VANGUARD CAPITAL MANAGEMENT LLC | 1,672,072 | $4M | +165,795 | +11.0% | 2Q | SEC ↗ |
| 8 | Knollwood Investment Advisory, LLC | 1,628,510 | $4M | — | +0.0% | 15Q | SEC ↗ |
| 9 | GEODE CAPITAL MANAGEMENT, LLC | 1,141,858 | $3M | +725,620 | +174.3% | 20Q | SEC ↗ |
| 10 | Ikarian Capital, LLC | 1,053,797 | $2M | — | +0.0% | 16Q | SEC ↗ |
| 11 | Hudson Bay Capital Management LP | 955,000 | $2M | -13,940 | -1.4% | 15Q | SEC ↗ |
| 12 | Pathstone Holdings, LLC | 859,110 | $2M | — | +0.0% | 11Q | SEC ↗ |
| 13 | RENAISSANCE TECHNOLOGIES LLC | 675,025 | $2M | +201,079 | +42.4% | 9Q | SEC ↗ |
| 14 | TWO SIGMA INVESTMENTS, LP | 622,882 | $1M | +92,070 | +17.3% | 15Q | SEC ↗ |
| 15 | STATE STREET CORP | 600,528 | $1M | +448,800 | +295.8% | 20Q | SEC ↗ |
| 16 | NORTHERN TRUST CORP | 360,744 | $815K | +285,532 | +379.6% | 20Q | SEC ↗ |
| 17 | VANGUARD PORTFOLIO MANAGEMENT LLC NEW | 320,795 | $725K | — | +0.0% | 1Q | SEC ↗ |
| 18 | DIMENSIONAL FUND ADVISORS LP | 291,559 | $659K | +171,803 | +143.5% | 14Q | SEC ↗ |
| 19 | VANGUARD FIDUCIARY TRUST CO | 291,240 | $658K | +92,014 | +46.2% | 2Q | SEC ↗ |
| 20 | BANK OF AMERICA CORP /DE | 274,781 | $621K | -45,435 | -14.2% | 15Q | SEC ↗ |
| 21 | BOOTHBAY FUND MANAGEMENT, LLC | 273,012 | $617K | — | +0.0% | 17Q | SEC ↗ |
| 22 | ACADIAN ASSET MANAGEMENT LLC | 270,338 | $611K | +84,488 | +45.5% | 4Q | SEC ↗ |
| 23 | NOMURA HOLDINGS INC NEW | 189,712 | $429K | — | +0.0% | 1Q | SEC ↗ |
| 24 | GOLDMAN SACHS GROUP INC | 183,927 | $416K | -22,756 | -11.0% | 15Q | SEC ↗ |
| 25 | BRIDGEWAY CAPITAL MANAGEMENT, LLC | 176,171 | $398K | — | +0.0% | 10Q | SEC ↗ |
| 26 | MORGAN STANLEY | 136,763 | $309K | -7,821 | -5.4% | 20Q | SEC ↗ |
| 27 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 126,104 | $285K | -475,372 | -79.0% | 12Q | SEC ↗ |
| 28 | Bank of New York Mellon Corp NEW | 124,377 | $281K | — | +0.0% | 1Q | SEC ↗ |
| 29 | CHARLES SCHWAB INVESTMENT MANAGEMENT I NEW | 115,099 | $260K | — | +0.0% | 1Q | SEC ↗ |
| 30 | Sixth Street Partners Management Compa NEW | 115,099 | $260K | — | +0.0% | 1Q | SEC ↗ |
| 31 | PFG Investments, LLC | 94,250 | $213K | +13,400 | +16.6% | 4Q | SEC ↗ |
| 32 | CATALYST FINANCIAL PARTNERS LLC | 89,699 | $203K | — | +0.0% | 13Q | SEC ↗ |
| 33 | Nuveen, LLC NEW | 63,355 | $143K | — | +0.0% | 1Q | SEC ↗ |
| 34 | MILLENNIUM MANAGEMENT LLC | 60,598 | $137K | -599,077 | -90.8% | 17Q | SEC ↗ |
| 35 | Squarepoint Ops LLC | 52,351 | $118K | +37,336 | +248.7% | 2Q | SEC ↗ |
| 36 | CITADEL ADVISORS LLC NEW | 51,049 | $115K | — | +0.0% | 1Q | SEC ↗ |
| 37 | Prospera Financial Services Inc | 50,000 | $113K | — | +0.0% | 3Q | SEC ↗ |
| 38 | WELLS FARGO & COMPANY/MN | 49,686 | $112K | +39,578 | +391.6% | 20Q | SEC ↗ |
| 39 | MARSHALL WACE, LLP | 48,114 | $109K | -144,775 | -75.1% | 3Q | SEC ↗ |
| 40 | DEUTSCHE BANK AG NEW | 46,132 | $104K | — | +0.0% | 1Q | SEC ↗ |
| 41 | Verdad Advisers, LP | 44,478 | $101K | +7,200 | +19.3% | 2Q | SEC ↗ |
| 42 | BARCLAYS PLC | 39,655 | $90K | +8,976 | +29.3% | 18Q | SEC ↗ |
| 43 | PRICE T ROWE ASSOCIATES INC /MD NEW | 39,327 | $89K | — | +0.0% | 1Q | SEC ↗ |
| 44 | Qube Research & Technologies Ltd | 38,614 | $87K | -81,774 | -67.9% | 12Q | SEC ↗ |
| 45 | NEW YORK STATE COMMON RETIREMENT FUND NEW | 36,200 | $82K | — | +0.0% | 1Q | SEC ↗ |
| 46 | RHUMBLINE ADVISERS NEW | 35,034 | $79K | — | +0.0% | 1Q | SEC ↗ |
| 47 | Rangeley Capital, LLC | 35,000 | $79K | — | +0.0% | 2Q | SEC ↗ |
| 48 | XTX Topco Ltd NEW | 32,134 | $73K | — | +0.0% | 1Q | SEC ↗ |
| 49 | Intrepid Financial Planning Group LLC | 30,150 | $68K | — | +0.0% | 15Q | SEC ↗ |
| 50 | Y-Intercept (Hong Kong) Ltd NEW | 29,540 | $67K | — | +0.0% | 1Q | SEC ↗ |
Recent Activity
New Positions (20)
| Holder | Shares | Value |
|---|---|---|
| VANGUARD PORTFOLIO MANAGEMENT LLC | 320,795 | $725K |
| NOMURA HOLDINGS INC | 189,712 | $429K |
| Bank of New York Mellon Corp | 124,377 | $281K |
| Sixth Street Partners Management Co | 115,099 | $260K |
| CHARLES SCHWAB INVESTMENT MANAGEMEN | 115,099 | $260K |
| Nuveen, LLC | 63,355 | $143K |
| CITADEL ADVISORS LLC | 51,049 | $115K |
| DEUTSCHE BANK AG | 46,132 | $104K |
| PRICE T ROWE ASSOCIATES INC /MD | 39,327 | $89K |
| NEW YORK STATE COMMON RETIREMENT FU | 36,200 | $82K |
| RHUMBLINE ADVISERS | 35,034 | $79K |
| XTX Topco Ltd | 32,134 | $73K |
| Y-Intercept (Hong Kong) Ltd | 29,540 | $67K |
| Quantinno Capital Management LP | 26,769 | $60K |
| Invesco Ltd. | 24,588 | $56K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Lt | 21,761 | $49K |
| Police & Firemen's Retirement Syste | 19,393 | $44K |
| Spark Investment Management LLC | 14,700 | $33K |
| STIFEL FINANCIAL CORP | 12,900 | $29K |
| Virtu Financial LLC | 11,940 | $27K |
Sold Out (20)
| Holder | Prev Shares | Prev Value |
|---|---|---|
| SG Americas Securities, LLC | 719,257 | $2M |
| Laurion Capital Management LP | 525,444 | $1M |
| JANE STREET GROUP, LLC | 89,661 | $203K |
| Point72 Asset Management, L.P. | 67,375 | $152K |
| Quadrature Capital Ltd | 49,046 | $111K |
| Catalyst Funds Management Pty Ltd | 45,600 | $103K |
| OMERS ADMINISTRATION Corp | 28,600 | $65K |
| SIMPLEX TRADING, LLC | 17,414 | $39K |
| CAPTRUST FINANCIAL ADVISORS | 15,757 | $36K |
| Brevan Howard Capital Management LP | 15,385 | $35K |
| HRT FINANCIAL LP | 13,162 | $30K |
| JACOBS LEVY EQUITY MANAGEMENT, INC | 13,011 | $29K |
| Schonfeld Strategic Advisors LLC | 11,300 | $26K |
| NINE MASTS CAPITAL Ltd | 10,637 | $24K |
| Advisory Services Network, LLC | 1,111 | $3K |
| FLAGSHIP HARBOR ADVISORS, LLC | 350 | $1K |
| NBT BANK N A /NY | 200 | $0K |
| Clearstead Advisors, LLC | 60 | $0K |
| Larson Financial Group LLC | 20 | $0K |
| Optiver Holding B.V. | 5 | $0K |
Biggest Increases (20)
| Holder | Added | Change % | Total Shares |
|---|---|---|---|
| BlackRock, Inc. | +2,311,789 | +1296.4% | 2,490,115 |
| GEODE CAPITAL MANAGEMENT, LLC | +725,620 | +174.3% | 1,141,858 |
| STATE STREET CORP | +448,800 | +295.8% | 600,528 |
| NORTHERN TRUST CORP | +285,532 | +379.6% | 360,744 |
| RENAISSANCE TECHNOLOGIES LLC | +201,079 | +42.4% | 675,025 |
| DIMENSIONAL FUND ADVISORS LP | +171,803 | +143.5% | 291,559 |
| VANGUARD CAPITAL MANAGEMENT LLC | +165,795 | +11.0% | 1,672,072 |
| TWO SIGMA INVESTMENTS, LP | +92,070 | +17.3% | 622,882 |
| VANGUARD FIDUCIARY TRUST CO | +92,014 | +46.2% | 291,240 |
| ACADIAN ASSET MANAGEMENT LLC | +84,488 | +45.5% | 270,338 |
| WELLS FARGO & COMPANY/MN | +39,578 | +391.6% | 49,686 |
| Squarepoint Ops LLC | +37,336 | +248.7% | 52,351 |
| JPMORGAN CHASE & CO | +18,717 | +1296.2% | 20,161 |
| CITIGROUP INC | +17,403 | +387.9% | 21,889 |
| PFG Investments, LLC | +13,400 | +16.6% | 94,250 |
| BNP PARIBAS FINANCIAL MARKETS | +10,121 | +837.8% | 11,329 |
| BARCLAYS PLC | +8,976 | +29.3% | 39,655 |
| Verdad Advisers, LP | +7,200 | +19.3% | 44,478 |
| AMERICAN CENTURY COMPANIES INC | +6,207 | +34.6% | 24,136 |
| Tower Research Capital LLC (TRC) | +2,781 | +2356.8% | 2,899 |
Biggest Decreases (15)
| Holder | Reduced | Change % | Total Shares |
|---|---|---|---|
| FMR LLC | -1,149,816 | -99.3% | 7,530 |
| MILLENNIUM MANAGEMENT LLC | -599,077 | -90.8% | 60,598 |
| SUSQUEHANNA INTERNATIONAL GROUP, LL | -475,372 | -79.0% | 126,104 |
| MARSHALL WACE, LLP | -144,775 | -75.1% | 48,114 |
| Qube Research & Technologies Ltd | -81,774 | -67.9% | 38,614 |
| BANK OF AMERICA CORP /DE | -45,435 | -14.2% | 274,781 |
| ADAR1 Capital Management, LLC | -45,000 | -2.1% | 2,111,334 |
| GOLDMAN SACHS GROUP INC | -22,756 | -11.0% | 183,927 |
| Hudson Bay Capital Management LP | -13,940 | -1.4% | 955,000 |
| UBS Group AG | -11,381 | -30.6% | 25,765 |
| MORGAN STANLEY | -7,821 | -5.4% | 136,763 |
| ROYAL BANK OF CANADA | -5,475 | -77.8% | 1,561 |
| AXQ CAPITAL, LP | -4,061 | -14.3% | 24,426 |
| GROUP ONE TRADING LLC | -753 | -51.1% | 722 |
| SBI Securities Co., Ltd. | -12 | -4.0% | 291 |