FormFactor, Inc.
US ˙ NasdaqGS ˙ US3463751087

SecurityFORM / FormFactor, Inc.
InstitutionSquarepoint Ops LLC
Latest Disclosed Ownership101,752 shares
Latest Disclosed Value $ 9,868,926
Squarepoint Ops LLC ownership in FORM / FormFactor, Inc.

On May 15, 2026 - Squarepoint Ops LLC filed a 13F-HR form disclosing ownership of 101,752 shares of FormFactor, Inc. (US:FORM) valued at $9,868,926 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 17,027 shares of FormFactor, Inc.. This represents a change in shares of 497.59% during the quarter. The current value of the position is $12,822,787 USD.

Squarepoint Ops LLC has a history of taking positions in derivatives of the underlying security (FORM) in the form of stock options. The firm currently holds call options representing 2,400 of underlying shares valued at $232,776 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: 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.

FORM / FormFactor, 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 FORMFACTOR COM 346375108 101,752 84,725 497.59 9,869 939.83 0.0116
2026-02-13 2025-12-31 13F FORMFACTOR COM 346375108 17,027 -282,832 -94.32 950 -91.31 0.0010
2025-11-14 2025-09-30 13F FORMFACTOR COM 346375108 299,859 229,154 324.10 10,921 349.01 0.0110
2025-08-27 2025-06-30 13F/A-1 FORMFACTOR COM 346375108 70,705 -36,267 -33.90 2,433 -19.63 0.0025
2025-08-14 2025-06-30 13F FORMFACTOR COM 346375108 70,705 -36,267 2,433 0.0025
2025-08-27 2025-03-31 13F/A-1 FORMFACTOR COM 346375108 106,972 60,175 128.59 3,026 46.96 0.0037
2025-05-15 2025-03-31 13F FORMFACTOR COM 346375108 106,972 60,175 3,026 0.0037
2025-02-14 2024-12-31 13F FORMFACTOR COM 346375108 46,797 -24,307 -34.19 2,059 -37.03 0.0020
2024-11-14 2024-09-30 13F FORMFACTOR COM 346375108 71,104 -11,291 -13.70 3,271 -34.43 0.0051
2024-08-14 2024-06-30 13F FORMFACTOR COM 346375108 82,395 76,848 1,385.40 4,987 1,871.15 0.0082
2024-05-15 2024-03-31 13F FORMFACTOR COM 346375108 5,547 5,547 253 0.0004
2024-02-14 2023-12-31 13F FORMFACTOR COM 346375108 0 -16,072 -100.00 0 -100.00
2023-11-14 2023-09-30 13F FORMFACTOR COM 346375108 16,072 -5,180 -24.37 562 -22.83 0.0014
2023-08-14 2023-06-30 13F FORMFACTOR COM 346375108 21,252 21,252 727 0.0022
2023-02-14 2022-12-31 13F FORMFACTOR COM 346375108 0 -14,589 -100.00 0 -100.00
2022-11-14 2022-09-30 13F FORMFACTOR COM 346375108 14,589 14,589 365 0.0018
2022-08-15 2022-06-30 13F FORMFACTOR COM 346375108 0 -16,800 -100.00 0 -100.00
2022-05-16 2022-03-31 13F FORMFACTOR COM 346375108 16,800 16,800 706 0.0030
2021-11-15 2021-09-30 13F FORMFACTOR COM 346375108 0 -30,598 -100.00 0 -100.00
2021-08-16 2021-06-30 13F FORMFACTOR COM 346375108 30,598 30,598 1,116 0.0042
2021-05-17 2021-03-31 13F FORMFACTOR COM 346375108 0 -11,364 -100.00 0 -100.00
2021-02-16 2020-12-31 13F FORMFACTOR COM 346375108 11,364 2,981 35.56 489 133.97 0.0036
2020-11-16 2020-09-30 13F FORMFACTOR COM 346375108 8,383 -49,802 -85.59 209 -87.76 0.0028
2020-08-14 2020-06-30 13F FORMFACTOR COM 346375108 58,185 11,657 25.05 1,707 82.57 0.0276
2020-05-15 2020-03-31 13F FORMFACTOR COM 346375108 46,528 46,528 -20.03 935 -45.23 0.0239
2020-02-14 2019-12-31 13F FORMFACTOR COM 346375108 0 -48,886 -100.00 0 -100.00
2019-11-14 2019-09-30 13F FORMFACTOR COM 346375108 48,886 -22,420 -31.44 911 -18.44 0.0081
2019-08-14 2019-06-30 13F FORMFACTOR COM 346375108 71,306 42,989 151.81 1,117 144.96 0.0109
2019-05-15 2019-03-31 13F FORMFACTOR COM 346375108 28,317 28,317 -60.29 456 -59.18 0.0048
2019-02-14 2018-12-31 13F FORMFACTOR COM 346375108 0 -51,902 -100.00 0 -100.00
2018-11-14 2018-09-30 13F FORMFACTOR COM 346375108 51,902 29,651 133.26 714 141.22 0.0085
2018-08-14 2018-06-30 13F FORMFACTOR COM 346375108 22,251 9,851 79.44 296 75.15 0.0039
2018-05-15 2018-03-31 13F FORMFACTOR COM 346375108 12,400 -31,092 -71.49 169 -75.18 0.0027
2018-02-14 2017-12-31 13F FORMFACTOR COM 346375108 43,492 24,392 127.71 681 111.49 0.0119
2017-11-14 2017-09-30 13F FORMFACTOR COM 346375108 19,100 -67,407 -77.92 322 -69.99 0.0062
2017-08-14 2017-06-30 13F FORMFACTOR COM 346375108 86,507 86,507 352.92 1,073 233.23 0.0211
2017-05-15 2017-03-31 13F FORMFACTOR COM 346375108 0 -15,263 -100.00 0 -100.00
2017-02-14 2016-12-31 13F FORMFACTOR COM 346375108 15,263 15,263 0.00 171 0.0070
2016-08-15 2016-06-30 13F FORMFACTOR COM 346375108 0 -13,600 -100.00 0 -100.00
2016-05-16 2016-03-31 13F FORMFACTOR COM 346375108 13,600 13,600 0.00 99 0.0077
2015-08-14 2015-06-30 13F FORMFACTOR COM 346375108 0 -19,300 -100.00 0 -100.00
2015-05-19 2015-03-31 13F/A-1 FORMFACTOR COM 346375108 19,300 19,300 171 0.0599
2015-05-15 2015-03-31 13F FORMFACTOR COM 346375108 19,300 171 0.0599
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
(%)
2026-05-15 2026-03-31 13F FORMFACTOR COM Call 2,400 233 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.