Latest Period
Q1 2026
Security Snapshot
PACIFIC BIOSCIENCES OF CALIFORNIA, INC. - Common Stock (PACB) Institutional Ownership
CUSIP: 69404D108
13F Institutional Holders and Ownership History from Q1 2014 to Q1 2026
Institutions Reporting
228
Shares (Excl. Options)
188,174,628
Price
$1.32
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- Security type / class
- Equity / Common Stock
- Symbol
- PACB on Nasdaq
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 188,174,628
- Total 13F value
- $248,527,164
- Portfolio coverage rank
- 0%
- Share change
- -13,221,898
- Value change
- -$19,851,193
- Number of holders
- 228
- Shares outstanding
- 301,979,157
- SEC-reported price per share
- $1.41
- Insider filing price
- $1.41
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- PACB - PACIFIC BIOSCIENCES OF CALIFORNIA, INC. - Common Stock is tracked under CUSIP 69404D108.
- 228 institutions reported positions in Q1 2026.
- 5 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 213 to 228 between Q4 2025 and Q1 2026.
- SEC-reported value moved from $373,261,409 to $248,527,164.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 228 institutions filings for Q1 2026.
Security key
69404D108
Latest holder period
Q1 2026
13F holders
228
13D/G owners
5
CIK / CUSIP context first
Open Q1 2026 holders
PACB full holder history
PACIFIC BIOSCIENCES OF CALIFORNIA, INC. SEC filings
PACIFIC BIOSCIENCES OF CALIFORNIA, INC. company facts
PACIFIC BIOSCIENCES OF CALIFORNIA, INC. insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 69404D108:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
5
Security
PACB
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| ARK Investment Management LLC | 12% | +20% | $69,684,106 | +$11,856,034 | 37,264,228 | +21% | ARK Investment Management LLC | 31 Dec 2025 |
| BlackRock, Inc. | 7.7% | $25,381,202 | 22,865,948 | BlackRock, Inc. | 31 Mar 2025 | |||
| EDMOND DE ROTHSCHILD ASSET MANAGEMENT (FRANCE) | 4.5% | $16,574,088 | 13,366,200 | EDMOND DE ROTHSCHILD ASSET MANAGEMENT (FRANCE) | 30 Jun 2025 | |||
| MADRONE CAPITAL PARTNERS, LLC | 2.8% | -57% | $10,849,394 | -$15,086,243 | 8,476,089 | -58% | Gregory Boyd Penner | 30 Sep 2025 |
| MILLENNIUM MANAGEMENT LLC | 0.7% | -88% | $2,446,489 | -$15,805,969 | 2,204,044 | -87% | Millennium Management LLC | 31 Mar 2025 |
As of 31 Mar 2026, 228 institutional investors reported holding 188,174,628 shares of PACIFIC BIOSCIENCES OF CALIFORNIA, INC. - Common Stock (PACB). This represents 62% of the company’s total 301,979,157 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
54%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| ARK Investment Management LLC | 12% | 36,273,288 | -2.7% | 0.37% | $47,880,740 |
| BlackRock, Inc. | 8.4% | 25,267,429 | +8.2% | 0% | $33,353,006 |
| SOFTBANK GROUP CORP. | 6.8% | 20,451,570 | 0% | 0.24% | $26,996,072 |
| VANGUARD CAPITAL MANAGEMENT LLC | 4.2% | 12,777,449 | 0% | 0% | $16,866,233 |
| Amova Asset Management Americas, Inc. | 2.3% | 7,037,987 | -9.9% | 0.13% | $9,219,763 |
| Sumitomo Mitsui Trust Group, Inc. | 2.3% | 7,037,987 | -9.9% | 0.01% | $9,290,143 |
| GEODE CAPITAL MANAGEMENT, LLC | 2.3% | 6,975,266 | -1.5% | 0% | $9,209,906 |
| STATE STREET CORP | 2% | 6,121,716 | +3.5% | 0% | $8,080,665 |
| MILLENNIUM MANAGEMENT LLC | 1.6% | 4,892,318 | +13% | 0% | $6,457,860 |
| D. E. Shaw & Co., Inc. | 1.2% | 3,637,547 | -18% | 0% | $4,801,562 |
| TWO SIGMA INVESTMENTS, LP | 1.2% | 3,509,613 | +22% | 0% | $4,632,689 |
| Nuveen, LLC | 0.98% | 2,950,929 | +248% | 0% | $3,895,226 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 0.95% | 2,868,393 | 0% | 0% | $3,786,279 |
| RENAISSANCE TECHNOLOGIES LLC | 0.82% | 2,489,100 | -35% | 0.01% | $3,285,612 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 0.8% | 2,405,496 | -2.4% | 0% | $3,175,255 |
| NORTHERN TRUST CORP | 0.71% | 2,130,788 | +4.1% | 0% | $2,812,640 |
| VANGUARD FIDUCIARY TRUST CO | 0.66% | 1,986,483 | 0% | 0% | $2,622,158 |
| MORGAN STANLEY | 0.61% | 1,840,460 | -24% | 0% | $2,429,407 |
| IQ EQ FUND MANAGEMENT (IRELAND) Ltd | 0.59% | 1,788,393 | -5.6% | 0.18% | $2,360,679 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 0.57% | 1,719,165 | -34% | 0% | $2,269,298 |
| BANK OF AMERICA CORP /DE/ | 0.55% | 1,666,706 | -10% | 0% | $2,200,052 |
| UBS Group AG | 0.54% | 1,640,099 | -48% | 0% | $2,164,931 |
| CITADEL ADVISORS LLC | 0.52% | 1,576,051 | -50% | 0% | $2,080,387 |
| Birchview Capital, LP | 0.5% | 1,500,000 | +200% | 1.1% | $1,980,000 |
| Invesco Ltd. | 0.49% | 1,468,148 | +2.5% | 0% | $1,937,955 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
49
Latest
Q1 2026
Rows shown
1-25 of 49
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 188,174,628 | $248,527,164 | -$19,851,193 | $1.32 | 228 |
| 2025 Q4 | 200,682,911 | $373,261,409 | +$45,692,100 | $1.87 | 213 |
| 2025 Q3 | 186,222,939 | $237,845,533 | -$15,544,161 | $1.28 | 204 |
| 2025 Q2 | 198,429,992 | $245,807,592 | -$33,393,899 | $1.24 | 201 |
| 2025 Q1 | 225,076,304 | $265,438,365 | -$42,568,126 | $1.18 | 215 |
| 2024 Q4 | 259,359,536 | $474,377,794 | +$51,266,960 | $1.83 | 224 |
| 2024 Q3 | 231,885,292 | $394,223,882 | -$15,146,412 | $1.70 | 221 |
| 2024 Q2 | 242,322,324 | $331,828,960 | -$126,309,908 | $1.37 | 221 |
| 2024 Q1 | 264,567,000 | $991,987,863 | -$194,324,005 | $3.75 | 259 |
| 2023 Q4 | 280,691,608 | $2,753,719,080 | +$174,125,078 | $9.81 | 264 |
| 2023 Q3 | 262,947,975 | $2,195,398,479 | +$60,147,076 | $8.35 | 269 |
| 2023 Q2 | 253,730,383 | $3,373,760,799 | +$3,630,482 | $13.30 | 261 |
| 2023 Q1 | 253,323,853 | $2,930,177,608 | +$337,446,210 | $11.58 | 246 |
| 2022 Q4 | 224,875,103 | $1,839,361,397 | -$8,472,047 | $8.18 | 224 |
| 2022 Q3 | 211,717,263 | $1,230,031,332 | -$113,902,446 | $5.80 | 205 |
| 2022 Q2 | 225,422,707 | $1,027,886,640 | -$73,855,004 | $4.42 | 210 |
| 2022 Q1 | 223,099,497 | $2,031,587,303 | +$56,829,128 | $9.10 | 235 |
| 2021 Q4 | 205,231,110 | $4,199,090,963 | +$311,852,672 | $20.46 | 242 |
| 2021 Q3 | 188,918,110 | $4,827,498,627 | +$390,443,256 | $25.55 | 238 |
| 2021 Q2 | 172,487,642 | $6,031,627,622 | +$293,878,727 | $34.97 | 253 |
| 2021 Q1 | 164,192,829 | $5,468,916,669 | -$280,136,379 | $33.31 | 249 |
| 2020 Q4 | 140,067,694 | $3,634,026,778 | +$744,373,801 | $25.94 | 149 |
| 2020 Q3 | 148,618,546 | $1,467,458,670 | +$444,724,505 | $9.87 | 171 |
| 2020 Q2 | 108,792,315 | $375,333,900 | -$26,373,067 | $3.45 | 145 |
| 2020 Q1 | 117,306,862 | $358,961,836 | -$19,512,348 | $3.06 | 125 |