FormFactor, Inc.
US ˙ NasdaqGS ˙ US3463751087

SecurityFORM / FormFactor, Inc.
InstitutionBarclays Plc
Latest Disclosed Ownership122,738 shares
Latest Disclosed Value $ 6,846,326
Barclays Plc ownership in FORM / FormFactor, Inc.

On February 13, 2026 - Barclays Plc filed a 13F-HR form disclosing ownership of 122,738 shares of FormFactor, Inc. (US:FORM) valued at $6,846,326 USD as of December 31, 2025. The entity filed a previous 13F-HR/A on March 31, 2026 disclosing 110,449 shares of FormFactor, Inc.. This represents a change in shares of 11.13% during the quarter. The current value of the position is $15,467,443 USD.

Barclays Plc 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 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: 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)
2026-02-13 2025-12-31 13F FORMFACTOR COM 346375108 122,738 12,289 11.13 6,846 70.21 0.0016
2026-03-31 2025-09-30 13F/A-3 FORMFACTOR COM 346375108 110,449 -42,384 -27.73 4,023 -23.51 0.0009
2026-03-19 2025-09-30 13F/A-2 FORMFACTOR COM 346375108 145,492 -7,341 6,693 0.0018
2025-11-12 2025-09-30 13F FORMFACTOR COM 346375108 110,449 -42,384 4,023 0.0009
2026-02-27 2025-06-30 13F/A-2 FORMFACTOR COM 346375108 152,833 44,230 40.73 5,259 71.16 0.0012
2025-08-14 2025-06-30 13F/A-1 FORMFACTOR COM 346375108 152,833 44,230 5 0.0012
2025-08-13 2025-06-30 13F FORMFACTOR COM 346375108 152,833 44,230 5 0.0004
2026-03-17 2025-03-31 13F/A-1 FORMFACTOR COM 346375108 108,603 -40,504 -27.16 3,072 -53.17 0.0009
2025-05-15 2025-03-31 13F FORMFACTOR COM 346375108 108,603 -40,504 3 0.0009
2026-03-19 2024-12-31 13F/A-1 FORMFACTOR COM 346375108 149,107 3,615 2.48 6,561 -1.97 0.0018
2025-02-13 2024-12-31 13F FORMFACTOR COM 346375108 149,107 3,615 7 0.0018
2026-03-31 2024-09-30 13F/A-2 FORMFACTOR COM 346375108 145,492 113,296 351.89 6,693 243.53 0.0018
2024-11-19 2024-09-30 13F/A-1 FORMFACTOR COM 346375108 145,492 113,296 7 0.0018
2024-11-15 2024-09-30 13F FORMFACTOR COM 346375108 145,492 113,296 7 0.0005
2026-03-23 2024-06-30 13F/A-1 FORMFACTOR COM 346375108 32,196 -41,864 -56.53 1,949 -42.35 0.0006
2024-08-14 2024-06-30 13F FORMFACTOR COM 346375108 32,196 -41,864 2 0.0006
2026-03-24 2024-03-31 13F/A-1 FORMFACTOR COM 346375108 74,060 -51,739 -41.13 3,379 -35.60 0.0012
2024-05-15 2024-03-31 13F FORMFACTOR COM 346375108 74,060 -51,739 3 0.0012
2026-03-25 2023-12-31 13F/A-1 FORMFACTOR COM 346375108 125,799 87,978 232.62 5,247 297.20 0.0019
2024-02-15 2023-12-31 13F FORMFACTOR COM 346375108 125,799 87,978 5 0.0019
2026-03-26 2023-09-30 13F/A-1 FORMFACTOR COM 346375108 37,821 -22,058 -36.84 1,321 -35.53 0.0008
2023-11-07 2023-09-30 13F FORMFACTOR COM 346375108 37,821 -22,058 1 0.0008
2026-03-30 2023-06-30 13F/A-2 FORMFACTOR COM 346375108 59,879 12,900 27.46 2,049 36.97 0.0013
2023-09-20 2023-06-30 13F/A-1 FORMFACTOR COM 346375108 59,879 12,900 2 0.0013
2023-08-03 2023-06-30 13F FORMFACTOR COM 346375108 59,879 12,900 2 0.0013
2026-03-30 2023-03-31 13F/A-1 FORMFACTOR COM 346375108 46,979 5,469 13.18 1,496 62.26 0.0007
2023-05-04 2023-03-31 13F FORMFACTOR COM 346375108 46,979 5,469 1 0.0007
2026-03-30 2022-12-31 13F/A-1 FORMFACTOR COM 346375108 41,510 10,313 33.06 923 18.05 0.0004
2023-02-13 2022-12-31 13F FORMFACTOR COM 346375108 41,510 10,313 1 0.0004
2022-11-03 2022-09-30 13F FORMFACTOR COM 346375108 31,197 1,863 6.35 781 -31.31 0.0009
2022-08-12 2022-06-30 13F FORMFACTOR COM 346375108 29,334 -39,604 -57.45 1,137 -60.77 0.0007
2022-05-16 2022-03-31 13F FORMFACTOR COM 346375108 68,938 -39,521 -36.44 2,898 -41.56 0.0023
2022-02-23 2021-12-31 13F/A-1 FORMFACTOR COM 346375108 108,459 34,099 45.86 4,959 78.57 0.0018
2022-02-14 2021-12-31 13F FORMFACTOR COM 346375108 108,459 34,099 4,959 0.0006
2021-11-09 2021-09-30 13F FORMFACTOR COM 346375108 74,360 8,640 13.15 2,777 15.95 0.0012
2021-08-13 2021-06-30 13F FORMFACTOR COM 346375108 65,720 -49,081 -42.75 2,395 -53.75 0.0011
2021-05-13 2021-03-31 13F FORMFACTOR COM 346375108 114,801 -2,574 -2.19 5,178 2.53 0.0028
2021-02-11 2020-12-31 13F FORMFACTOR COM 346375108 117,375 -9,889 -7.77 5,050 59.21 0.0027
2020-11-12 2020-09-30 13F FORMFACTOR COM 346375108 127,264 9,299 7.88 3,172 -8.35 0.0019
2020-08-12 2020-06-30 13F FORMFACTOR COM 346375108 117,965 1,936 1.67 3,461 48.41 0.0027
2020-05-13 2020-03-31 13F FORMFACTOR COM 346375108 116,029 -50,631 -30.38 2,332 -46.13 0.0018
2020-02-10 2019-12-31 13F FORMFACTOR COM 346375108 166,660 16,289 10.83 4,329 54.39 0.0024
2019-11-15 2019-09-30 13F/A-1 FORMFACTOR COM 346375108 150,371 45,693 43.65 2,804 70.98 0.0018
2019-11-14 2019-09-30 13F FORMFACTOR COM 346375108 150,371 45,693 2,804 648.2880
2019-08-14 2019-06-30 13F FORMFACTOR COM 346375108 104,678 35,982 52.38 1,640 48.42 0.0010
2019-05-15 2019-03-31 13F FORMFACTOR COM 346375108 68,696 23,240 51.13 1,105 72.39 0.0008
2019-02-14 2018-12-31 13F FORMFACTOR COM 346375108 45,456 -60,462 -57.08 641 -55.98 0.0005
2018-11-14 2018-09-30 13F FORMFACTOR COM 346375108 105,918 64,715 157.06 1,456 165.21 0.0010
2018-08-14 2018-06-30 13F FORMFACTOR COM 346375108 41,203 2,029 5.18 549 2.62 0.0005
2018-05-15 2018-03-31 13F FORMFACTOR COM 346375108 39,174 16,377 71.84 535 49.86 0.0004
2018-02-14 2017-12-31 13F FORMFACTOR COM 346375108 22,797 10,836 90.59 357 76.73 0.0003
2017-11-14 2017-09-30 13F FORMFACTOR COM 346375108 11,961 -17,302 -59.13 202 -44.51 0.0002
2017-08-14 2017-06-30 13F FORMFACTOR COM 346375108 29,263 -34,937 -54.42 364 -52.17 0.0004
2017-05-15 2017-03-31 13F FORMFACTOR COM 346375108 64,200 24,834 63.08 761 72.95 0.0008
2017-02-14 2016-12-31 13F FORMFACTOR COM 346375108 39,366 14,832 60.45 440 64.79 0.0005
2016-11-14 2016-09-30 13F FORMFACTOR COM 346375108 24,534 -136,280 -84.74 267 -81.54 0.0003
2016-08-12 2016-06-30 13F FORMFACTOR COM 346375108 160,814 21,414 15.36 1,446 48.16 0.0019
2016-05-16 2016-03-31 13F FORMFACTOR COM 346375108 139,400 -84 -0.06 976 -22.29 0.0015
2016-02-12 2015-12-31 13F FORMFACTOR COM 346375108 139,484 33,718 31.88 1,256 97.80 0.0015
2015-11-13 2015-09-30 13F FORMFACTOR COM 346375108 105,766 104,589 8,886.07 635 5,672.73 0.0008
2015-08-14 2015-06-30 13F FORMFACTOR COM 346375108 1,177 -579 -32.97 11 -26.67 0.0000
2015-05-19 2015-03-31 13F/A-1 FORMFACTOR COM 346375108 1,756 -12,087 -87.31 15 -86.36 0.0000
2015-05-14 2015-03-31 13F FORMFACTOR COM 346375108 1,756 15
2015-02-13 2014-12-31 13F FORMFACTOR COM 346375108 13,843 -8,441 -37.88 110 -29.94 0.0001
2014-11-14 2014-09-30 13F FORMFACTOR COM 346375108 22,284 1,728 8.41 157 -4.27 0.0002
2014-08-14 2014-06-30 13F FORMFACTOR COM 346375108 20,556 -12,185 -37.22 164 -16.75 0.0002
2014-05-15 2014-03-31 13F FORMFACTOR COM 346375108 32,741 15,089 85.48 197 87.62 0.0002
2014-02-13 2013-12-31 13F FORMFACTOR COM 346375108 17,652 5,675 47.38 105 45.83 0.0001
2013-11-14 2013-09-30 13F FORMFACTOR COM 346375108 11,977 -283 -2.31 72 -13.25 0.0001
2013-08-14 2013-06-30 13F FORMFACTOR COM 346375108 12,260 12,260 83 0.0001
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
(%)
2018-02-14 2017-12-31 13F FORMFACTOR OPT Call 0 -100.00 0 -100.00 n/a n/a n/a
2017-11-14 2017-09-30 13F FORMFACTOR OPT Call 200 3 n/a n/a n/a
2014-02-13 2013-12-31 13F FORMFACTOR OPT Call 0 -100.00 0 -100.00 n/a n/a n/a
2013-11-14 2013-09-30 13F FORMFACTOR OPT Call 30,800 0.00 185 -11.06 n/a n/a n/a
2013-08-14 2013-06-30 13F FORMFACTOR OPT Call 30,800 208 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
(%)
2013-11-14 2013-09-30 13F FORMFACTOR OPT Put 0 -100.00 0 -100.00 n/a n/a n/a
2013-08-14 2013-06-30 13F FORMFACTOR OPT Put 3,300 22 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.