Pacific Biosciences of California, Inc.
MX ˙ BMV ˙ US69404D1081
SecurityMX:PACB / Pacific Biosciences of California, Inc.
InstitutionMillennium Management Llc
ManagerIsrael Englander
Latest Disclosed Ownership2,204,044 shares
Ownership 0.70%
Millennium Management Llc ownership in PACB / Pacific Biosciences of California, Inc.

2025-04-09 - Millennium Management Llc has filed an SCHEDULE 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 2,204,044 shares of Pacific Biosciences of California, Inc. (MX:PACB). This represents 0.7 percent ownership of the company. In their previous filing dated 2024-12-10 , Millennium Management Llc had reported owning 16,443,656 shares, indicating a decrease of -86.60 percent.

Millennium Management Llc has a history of taking positions in derivatives of the underlying security (PACB) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD and put options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

Institutional Ownership: 13D/G Filings

This table shows a history of the 13D/G filings made by the investor and/or investor group. Note that the share values in this table are not directly comparable to any numbers shown in the 13F table (if any).

File
Date
Effective
Date
Form Prev
Shares
Latest
Shares
ΔShares
(Percent)
Ownership
(Percent)
ΔOwnership
(Percent)
2025-04-09 2025-04-09 13G/A 16,443,656 2,204,044 -86.60 0.70 -88.33
2024-12-10 2024-12-10 13G 12,396,737 16,443,656 32.65 6.00 33.33
2024-11-08 2024-11-08 13G 12,396,737 4.50

Important Note: One of the primary uses of the 13D/G filings is to evaluate the ability of a firm to control a company (ie, the "beneficial ownership"). To that end, firms are required to report not just direct holdings in companies, but indirect holdings that they control. For investment firms, these indirect holdings can include shares in funds they manage, advisory accounts, and in the case of activist campaigns, pledged votes. Therefore, share counts listed in 13D/G filings can differ significantly than share counts listed in 13F filings.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

MX:PACB / Pacific Biosciences of California, Inc. Historical Put/Call Ratio
Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 4,892,318 547,749 12.61 6,458 -20.52 0.0027
2026-02-17 2025-12-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 4,344,569 -572,226 -11.64 8,124 29.10 0.0034
2025-11-14 2025-09-30 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 4,916,795 4,048,555 466.29 6,293 484.85 0.0027
2025-08-14 2025-06-30 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 868,240 -1,335,804 -60.61 1,077 -58.62 0.0005
2025-05-15 2025-03-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 2,204,044 -14,861,287 -87.08 2,601 -91.67 0.0014
2025-02-14 2024-12-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 17,065,331 6,642,753 63.73 31,230 76.26 0.0153
2024-11-14 2024-09-30 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 10,422,578 5,792,951 125.13 17,718 179.38 0.0084
2024-08-14 2024-06-30 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 4,629,627 2,215,506 91.77 6,343 -29.94 0.0029
2024-05-15 2024-03-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 2,414,121 2,414,121 9,053 0.0039
2024-02-14 2023-12-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 0 -153,717 -100.00 0 -100.00
2023-11-14 2023-09-30 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 153,717 -1,149,664 -88.21 1,284 -92.60 0.0006
2023-08-14 2023-06-30 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 1,303,381 1,303,381 17,335 0.0085
2023-05-15 2023-03-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 0 -599,888 -100.00 0 -100.00
2023-02-14 2022-12-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 599,888 338,261 129.29 4,907 223.04 0.0027
2022-11-14 2022-09-30 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 261,627 193,658 284.92 1,519 406.33 0.0009
2022-08-15 2022-06-30 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 67,969 -2,368,933 -97.21 300 -98.65 0.0002
2022-05-16 2022-03-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 2,436,902 1,978,498 431.61 22,176 136.44 0.0118
2022-02-14 2021-12-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 458,404 69,124 17.76 9,379 -5.70 0.0048
2021-11-15 2021-09-30 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 389,280 -277,725 -41.64 9,946 -57.36 0.0060
2021-08-16 2021-06-30 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 667,005 324,372 94.67 23,325 104.37 0.0143
2021-05-17 2021-03-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 342,633 -1,132,951 -76.78 11,413 -70.18 0.0082
2021-02-16 2020-12-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 1,475,584 -687,281 -31.78 38,277 79.31 0.0276
2020-11-16 2020-09-30 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 2,162,865 127,402 6.26 21,347 204.00 0.0263
2020-08-14 2020-06-30 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 2,035,463 -315,834 -13.43 7,022 -2.40 0.0096
2020-05-14 2020-03-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 2,351,297 -189,293 -7.45 7,195 -44.90 0.0162
2020-02-14 2019-12-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 2,540,590 651,690 34.50 13,059 33.99 0.0163
2019-11-14 2019-09-30 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 1,888,900 1,239,200 190.73 9,746 147.93 0.0154
2019-08-15 2019-06-30 13F/A-1 PACIFIC BIOSCIENCES CALIF IN COM 69404D108 649,700 -2,080,762 -76.21 3,931 -80.09 0.0059
2019-05-14 2019-03-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 2,730,462 64,374 2.41 19,741 0.06 0.0295
2019-02-15 2018-12-31 13F/A-1 PACIFIC BIOSCIENCES CALIF IN COM 69404D108 2,666,088 2,343,773 727.17 19,729 1,031.25 0.0308
2019-02-14 2018-12-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 2,666,088 19,729
2018-11-14 2018-09-30 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 322,315 -21,879 -6.36 1,744 42.72 0.0021
2018-08-14 2018-06-30 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 344,194 54,671 18.88 1,222 105.72 0.0016
2018-05-15 2018-03-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 289,523 163,767 130.23 594 78.92 0.0008
2018-02-14 2017-12-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 125,756 -836,465 -86.93 332 -93.43 0.0005
2017-11-14 2017-09-30 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 962,221 485,375 101.79 5,052 197.53 0.0077
2017-08-14 2017-06-30 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 476,846 460,474 2,812.57 1,698 1,897.65 0.0030
2017-05-15 2017-03-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 16,372 -930,173 -98.27 85 -97.64 0.0002
2017-02-14 2016-12-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 946,545 154,570 19.52 3,597 -49.31 0.0075
2016-11-14 2016-09-30 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 791,975 -2,820,219 -78.07 7,096 -72.08 0.0119
2016-08-15 2016-06-30 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 3,612,194 91,167 2.59 25,412 -15.09 0.0582
2016-05-16 2016-03-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 3,521,027 3,051,238 649.49 29,929 385.23 0.0748
2016-02-16 2015-12-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 469,789 -2,425,916 -83.78 6,168 -41.80 0.0130
2015-11-16 2015-09-30 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 2,895,705 -548,762 -15.93 10,598 -46.58 0.0205
2015-08-14 2015-06-30 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 3,444,467 1,275,560 58.81 19,840 56.64 0.0375
2015-05-15 2015-03-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 2,168,907 1,889 0.09 12,666 -25.45 0.0236
2015-02-17 2014-12-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 2,167,018 284,738 15.13 16,989 83.82 0.0360
2014-11-14 2014-09-30 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 1,882,280 -1,006,444 -34.84 9,242 -48.23 0.0234
2014-08-14 2014-06-30 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 2,888,724 -464,812 -13.86 17,852 -0.50 0.0494
2014-05-15 2014-03-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 3,353,536 907,389 37.09 17,941 40.24 0.0520
2014-02-14 2013-12-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 2,446,147 332,713 15.74 12,793 9.66 0.0404
2013-11-14 2013-09-30 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 2,113,434 1,672,917 379.76 11,666 946.28 0.0376
2013-08-14 2013-06-30 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 440,517 440,517 1,115 0.0034
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2024-05-15 2024-03-31 13F PACIFIC BIOSCIENCES CALIF IN COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2024-02-14 2023-12-31 13F PACIFIC BIOSCIENCES CALIF IN COM Call 103,500 -75.07 1,015 -70.72 n/a n/a n/a
2023-11-14 2023-09-30 13F PACIFIC BIOSCIENCES CALIF IN COM Call 415,200 315.20 3,467 160.60 n/a n/a n/a
2023-08-14 2023-06-30 13F PACIFIC BIOSCIENCES CALIF IN COM Call 100,000 -50.32 1,330 -42.94 n/a n/a n/a
2023-05-15 2023-03-31 13F PACIFIC BIOSCIENCES CALIF IN COM Call 201,300 101.30 2,331 184.96 n/a n/a n/a
2023-02-14 2022-12-31 13F PACIFIC BIOSCIENCES CALIF IN COM Call 100,000 -80.04 818 -71.87 n/a n/a n/a
2022-11-14 2022-09-30 13F PACIFIC BIOSCIENCES CALIF IN COM Call 501,000 150.50 2,908 228.96 n/a n/a n/a
2022-08-15 2022-06-30 13F PACIFIC BIOSCIENCES CALIF IN COM Call 200,000 0.00 884 -51.43 n/a n/a n/a
2022-05-16 2022-03-31 13F PACIFIC BIOSCIENCES CALIF IN COM Call 200,000 233.33 1,820 48.21 n/a n/a n/a
2022-02-14 2021-12-31 13F PACIFIC BIOSCIENCES CALIF IN COM Call 60,000 1,228 n/a n/a n/a
2021-11-15 2021-09-30 13F PACIFIC BIOSCIENCES CALIF IN COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-08-16 2021-06-30 13F PACIFIC BIOSCIENCES CALIF IN COM Call 100,000 0.00 3,497 4.98 n/a n/a n/a
2021-05-17 2021-03-31 13F PACIFIC BIOSCIENCES CALIF IN COM Call 100,000 -50.00 3,331 -35.79 n/a n/a n/a
2021-02-16 2020-12-31 13F PACIFIC BIOSCIENCES CALIF IN COM Call 200,000 5,188 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2025-11-14 2025-09-30 13F PACIFIC BIOSCIENCES CALIF IN COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2025-08-14 2025-06-30 13F PACIFIC BIOSCIENCES CALIF IN COM Put 50,000 62 n/a n/a n/a
2025-02-14 2024-12-31 13F PACIFIC BIOSCIENCES CALIF IN COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2024-11-14 2024-09-30 13F PACIFIC BIOSCIENCES CALIF IN COM Put 198,200 32.13 337 63.90 n/a n/a n/a
2024-08-14 2024-06-30 13F PACIFIC BIOSCIENCES CALIF IN COM Put 150,000 200.00 206 9.63 n/a n/a n/a
2024-05-15 2024-03-31 13F PACIFIC BIOSCIENCES CALIF IN COM Put 50,000 188 n/a n/a n/a
2019-11-14 2019-09-30 13F NUCOR COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2019-08-14 2019-06-30 13F NUCOR COM Put 5,800 320 n/a n/a n/a
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.