Latest Period
Q2 2026
CUSIP: 004225108
Latest Period
Q2 2026
Institutions Reporting
347
Shares (Excl. Options)
168,411,411
Price
$25.30
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Latest holder context comes from 347 institutions filings for Q2 2026.
Security key
004225108
Latest holder period
Q2 2026
13F holders
347
13D/G owners
5
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 | |||
| STATE STREET CORP | 5.3% | $229,628,164 | 9,076,212 | STATE STREET CORPORATION | 30 Jun 2026 | |||
| 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 30 Jun 2026, 347 institutional investors reported holding 168,411,411 shares of ACADIA PHARMACEUTICALS INC - COMMON STOCK (ACAD). This represents 98% of the company’s total 171,249,283 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% | 42,912,904 | +0.04% | 5.4% | $1,085,696,471 |
| BlackRock, Inc. | 13% | 22,515,173 | +4.5% | 0.01% | $569,633,876 |
| STATE STREET CORP | 5.3% | 9,076,212 | +8.9% | 0.01% | $229,628,164 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 5.2% | 8,838,450 | +1.9% | 0.01% | $223,612,785 |
| RTW INVESTMENTS, LP | 4.2% | 7,144,524 | 0% | 1.5% | $180,756,457 |
| VANGUARD CAPITAL MANAGEMENT LLC | 3.4% | 5,763,750 | +1.8% | 0% | $145,822,875 |
| DIMENSIONAL FUND ADVISORS LP | 2.2% | 3,694,988 | +17% | 0.02% | $93,482,749 |
| GEODE CAPITAL MANAGEMENT, LLC | 2% | 3,358,129 | -3.1% | 0% | $84,977,229 |
| Palo Alto Investors LP | 1.7% | 2,864,096 | -0.3% | 10% | $72,461,629 |
| GOLDMAN SACHS GROUP INC | 1.5% | 2,580,115 | +66% | 0.01% | $65,276,910 |
| Qube Research & Technologies Ltd | 1.4% | 2,446,610 | +157% | 0.07% | $61,899,233 |
| Point72 Asset Management, L.P. | 1.4% | 2,433,168 | -5.6% | 0.09% | $61,559,150 |
| CITADEL ADVISORS LLC | 1.3% | 2,182,177 | +250% | 0.03% | $55,209,078 |
| Pictet Asset Management Holding SA | 1.2% | 1,983,198 | -2.1% | 0.05% | $50,146,450 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 1.2% | 1,969,445 | +25% | 0.02% | $49,826,959 |
| MARSHALL WACE, LLP | 1% | 1,764,838 | +2216% | 0.04% | $44,650,402 |
| D. E. Shaw & Co., Inc. | 0.99% | 1,697,937 | +133% | 0.03% | $42,957,806 |
| BRAIDWELL LP | 0.96% | 1,646,399 | -33% | 1.5% | $41,653,895 |
| NORGES BANK | 0.95% | 1,623,308 | 0% | $41,069,692 | |
| Frazier Life Sciences Management, L.P. | 0.84% | 1,438,198 | 0% | 0.79% | $36,386,409 |
| NORTHERN TRUST CORP | 0.8% | 1,367,422 | +7.5% | 0% | $34,595,776 |
| Nuveen, LLC | 0.79% | 1,348,192 | +30% | 0.01% | $34,109,259 |
| Artisan Partners Limited Partnership | 0.77% | 1,325,134 | -0.5% | 0.05% | $33,525,890 |
| BANK OF AMERICA CORP /DE/ | 0.76% | 1,300,385 | -16% | 0% | $32,899,740 |
| RENAISSANCE TECHNOLOGIES LLC | 0.75% | 1,282,596 | -26% | 0.04% | $32,449,679 |
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 Q2 | 168,411,411 | $4,257,885,523 | +$102,468,594 | $25.30 | 347 |
| 2026 Q1 | 164,739,797 | $3,666,709,895 | -$63,009,327 | $22.26 | 342 |
| 2025 Q4 | 166,357,635 | $4,442,297,638 | -$75,199,637 | $26.71 | 334 |
| 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 |