Latest Period
Q1 2026
CUSIP: 004225108
Latest Period
Q1 2026
Institutions Reporting
339
Shares (Excl. Options)
164,739,362
Price
$22.26
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Latest holder context comes from 339 institutions filings for Q1 2026.
Security key
004225108
Latest holder period
Q1 2026
13F holders
339
13D/G owners
4
CIK / CUSIP context first
Broader feeds
Open recent reporting periods for CUSIP 004225108:
13D/G owners
Large-stake holder rows connected to Schedule 13D/G evidence.
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| BAKER BROS. ADVISORS LP | 25% | $1,162,886,859 | 43,294,373 | Julian C. Baker | 24 Feb 2026 | |||
| BlackRock, Inc. | 12% | $292,813,929 | 19,878,746 | BlackRock, Inc. | 31 Jan 2025 | |||
| VANGUARD PORTFOLIO MANAGEMENT LLC | 5.2% | $195,465,216 | 8,781,007 | Vanguard Portfolio Management | 31 Mar 2026 | |||
| RTW INVESTMENTS, LP | 4.2% | -20% | $152,464,142 | -$33,311,249 | 7,144,524 | -18% | RTW Investments, LP | 30 Sep 2025 |
As of 31 Mar 2026, 339 institutional investors reported holding 164,739,362 shares of ACADIA PHARMACEUTICALS INC - Common Stock (ACAD). This represents 97% of the company’s total 170,504,990 outstanding shares.
13F concentration
Largest 13F positions for this security by reported shares and value.
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BAKER BROS. ADVISORS LP | 25% | 42,896,690 | 0% | 5.5% | $954,880,319 |
| BlackRock, Inc. | 13% | 21,550,921 | +3.8% | 0.01% | $479,723,502 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 5.1% | 8,671,645 | 0% | 0.01% | $193,030,818 |
| STATE STREET CORP | 4.9% | 8,332,771 | +5.3% | 0.01% | $185,487,482 |
| RTW INVESTMENTS, LP | 4.2% | 7,144,524 | 0% | 1.6% | $159,037,104 |
| VANGUARD CAPITAL MANAGEMENT LLC | 3.3% | 5,661,400 | 0% | 0% | $126,022,764 |
| GEODE CAPITAL MANAGEMENT, LLC | 2% | 3,464,689 | +7% | 0% | $77,137,406 |
| FIRST TRUST ADVISORS LP | 2% | 3,343,868 | +47% | 0.05% | $74,434,501 |
| DIMENSIONAL FUND ADVISORS LP | 1.9% | 3,155,160 | +8% | 0.01% | $70,221,842 |
| Palo Alto Investors LP | 1.7% | 2,872,695 | +16% | 9.8% | $63,946,191 |
| Point72 Asset Management, L.P. | 1.5% | 2,577,916 | -24% | 0.1% | $57,384,410 |
| BRAIDWELL LP | 1.4% | 2,471,199 | +22% | 1.8% | $55,008,890 |
| Pictet Asset Management Holding SA | 1.2% | 2,026,044 | +31% | 0.05% | $44,736,128 |
| RENAISSANCE TECHNOLOGIES LLC | 1% | 1,724,196 | +13% | 0.06% | $38,380,603 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 0.92% | 1,569,491 | +4.5% | 0.02% | $34,936,870 |
| GOLDMAN SACHS GROUP INC | 0.91% | 1,557,804 | -0.78% | 0% | $34,676,717 |
| BANK OF AMERICA CORP /DE/ | 0.91% | 1,553,770 | +27% | 0% | $34,586,921 |
| Frazier Life Sciences Management, L.P. | 0.84% | 1,438,198 | +11% | 0.82% | $32,014,287 |
| Artisan Partners Limited Partnership | 0.78% | 1,331,813 | 0.05% | $29,646,157 | |
| FRED ALGER MANAGEMENT, LLC | 0.75% | 1,277,151 | -18% | 0.12% | $28,429,382 |
| NORTHERN TRUST CORP | 0.75% | 1,272,611 | +3% | 0% | $28,328,322 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 0.69% | 1,173,560 | +0.11% | 0% | $26,123,446 |
| MORGAN STANLEY | 0.64% | 1,093,151 | -4.3% | 0% | $24,333,551 |
| Nuveen, LLC | 0.61% | 1,036,987 | -1.9% | 0.01% | $23,083,330 |
| Rockefeller Capital Management L.P. | 0.6% | 1,027,357 | -7.7% | 0.04% | $22,868,967 |
Quarter history
Holder count, reported shares/value, and median price by quarter.
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 164,739,362 | $3,666,700,528 | -$63,003,861 | $22.26 | 339 |
| 2025 Q4 | 166,357,428 | $4,442,292,109 | -$75,199,637 | $26.71 | 333 |
| 2025 Q3 | 167,660,004 | $3,576,680,400 | -$45,558,483 | $21.34 | 329 |
| 2025 Q2 | 169,807,590 | $3,663,065,967 | -$28,402,837 | $21.57 | 308 |
| 2025 Q1 | 171,490,817 | $2,848,881,391 | +$139,123,298 | $16.61 | 315 |
| 2024 Q4 | 162,840,883 | $2,987,247,881 | +$134,856,202 | $18.35 | 292 |
| 2024 Q3 | 155,896,219 | $2,398,194,293 | -$102,074,875 | $15.38 | 257 |
| 2024 Q2 | 161,184,775 | $2,619,212,148 | -$8,478,472 | $16.25 | 265 |
| 2024 Q1 | 161,305,797 | $2,982,051,495 | -$11,656,862 | $18.49 | 266 |
| 2023 Q4 | 159,519,491 | $4,994,576,405 | +$146,161,056 | $31.31 | 272 |
| 2023 Q3 | 156,109,164 | $3,253,545,379 | -$82,496,501 | $20.84 | 246 |
| 2023 Q2 | 159,054,444 | $3,809,481,545 | +$45,597,747 | $23.95 | 232 |
| 2023 Q1 | 158,037,917 | $2,974,292,426 | +$53,351,193 | $18.82 | 231 |
| 2022 Q4 | 155,962,184 | $2,482,889,933 | +$28,684,244 | $15.92 | 221 |
| 2022 Q3 | 152,629,101 | $2,497,282,084 | +$30,373,584 | $16.36 | 213 |
| 2022 Q2 | 150,587,330 | $2,121,823,126 | +$730,128 | $14.09 | 229 |
| 2022 Q1 | 147,043,761 | $3,562,570,671 | -$19,931,550 | $24.22 | 254 |
| 2021 Q4 | 148,180,956 | $3,457,975,885 | +$79,727,176 | $23.34 | 238 |
| 2021 Q3 | 144,785,492 | $2,405,101,667 | -$85,712,883 | $16.61 | 221 |
| 2021 Q2 | 148,041,851 | $3,610,234,111 | +$54,424,511 | $24.39 | 238 |
| 2021 Q1 | 145,061,195 | $3,742,096,150 | -$221,828,762 | $25.80 | 258 |
| 2020 Q4 | 147,844,682 | $7,903,754,877 | -$103,617,443 | $53.46 | 298 |
| 2020 Q3 | 150,041,187 | $6,188,429,775 | -$100,187,840 | $41.25 | 262 |
| 2020 Q2 | 152,670,605 | $7,396,593,388 | -$42,512,386 | $48.47 | 292 |
| 2020 Q1 | 153,864,301 | $6,498,311,210 | +$189,756,698 | $42.25 | 243 |