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Of the 14 tracked institutions holding PACB, 8 have a 3-year clone track record — 5 of them beat the S&P. Average holder's clone alpha: +1.2pt. It's a gauge of who owns the name, not just how many.
Among the 14 tracked institutional investors we monitor, PACB (PACIFIC BIOSCIENCES CALIF IN) is held with a combined value of $173.22M across 101,084,262 shares. The largest holder is BlackRock, Inc. with a position worth $54.33M. 2 funds opened new positions in the most recent quarter. 6 funds increased their holdings. 5 funds reduced their position.
Total Institutional Value
$173.22M
Total Shares Held
101,084,262
Institutional Holders
14
Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.
| # | Fund | Value↓ | Portfolio % | Change |
|---|---|---|---|---|
| 1 | BlackRock, Inc. | $54.33M | 0.00% | +28.0% |
| 2 | ARK Investment Management LLC | $50.03M | 0.32% | -17.9% |
| 3 | VANGUARD GROUP INC | $31.86M | 0.00% | +4.0% |
| 4 | STATE STREET CORP | $10.01M | 0.00% | -2.6% |
| 5 | Point72 Asset Management, L.P. | $8.04M | 0.01% | +1575.6% |
| 6 | MILLENNIUM MANAGEMENT LLC | $6.66M | 0.00% | -19.0% |
| 7 | CITADEL ADVISORS LLC | $4.78M | 0.00% | +80.6% |
| 8 | AQR CAPITAL MANAGEMENT LLC | $2.18M | 0.00% | +70.7% |
| 9 | RENAISSANCE TECHNOLOGIES LLC | $1.62M | 0.00% | -61.2% |
| 10 | TWO SIGMA ADVISERS, LP | $1.55M | 0.00% | New |
SEC Schedule 13D (activist) and 13G (passive) filings for PACB. Filed when an investor acquires 5%+ ownership.
As of the latest SEC 13F filings, BlackRock, Inc. is the largest institutional holder of PACB with a position worth $54.33M, representing 0.00% of their portfolio. In total, 14 institutional investors hold PACB with a combined value of $173.22M.
In the most recent quarter, 2 funds opened a new position in PACB. Additionally, 6 increased their holdings and 5 reduced their positions.
Institutional investors hold $173.22M worth of PACB stock across 14 positions. The largest institutional holder is BlackRock, Inc. with $54.33M in holdings.
A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For PACB, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.
Get notified when hedge funds change their PACB positions.
Alpha = the manager's 3-year clone return minus the S&P 500. A skilled roster is a stronger tell than a crowded one — though even skilled managers' edge doesn't reliably survive the 13F disclosure lag. Why →
Last Close
$1.29
2026-09-09
YTD
-29.9%
12% of 52-week range
