Security record · archived quarter

FORM

FormFactor, Inc. · Technology · Semiconductors

95.03 -15.3% mkt cap $7.42B quote delayed (FMP) · as of Oct 22 22:08 UTC · separate from filing data below

Q3 2026 Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024

125Tracked holders

+13Δ holders

52.00MShares held

$4.95BReported value

+16New positions

−4Exits

Rising Conviction score 48/100 How these are computed → Explain this at the Research Desk →

Momentum inputs (comparable managers): holder breadth +11.6% · share flow +2.9% · net new positions +9.6% · formula
Broad accumulation: rising shares across more holders

All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q1 2026

Ownership over time

Quarter	Holders	Δ	Shares	Reported value	New	Exits
Q3 2026	3	+1	83.16K	$9.45M	+1	−2
Q2 2026	128	+8	49.23M	$7.76B	+16	−10
Q1 2026	125	+13	52.00M	$4.95B	+16	−4
Q4 2025	112	+3	57.86M	$3.23B	+4	n/a
Q3 2025	17	0	33.04M	$1.20B	+1	−2
Q2 2025	15	0	30.26M	$1.04B	+2	−2
Q1 2025	12	-2	9.43M	$266.77M	+1	−3
Q4 2024	14	-2	10.58M	$465.48M	+1	−3
Q3 2024	15	0	7.81M	$359.35M	+1	−1
Q2 2024	15	n/a	8.23M	$498.09M	n/a	n/a

Holder count

Who holds it · Q1 2026

#	Manager	Shares	Δ shares	Value	Their weight		Held
1	BlackRock ✦ (passive)	12.25M	+5.9%	$1.19B	0.0%	▲ Add	4	SEC ↗ ×17
2	Vanguard Capital Management Llc	3.47M	n/a	$336.80M	0.0%	n/c	1	SEC ↗
3	State Street Global Advisors ✦ (passive)	2.93M	+2.0%	$284.00M	0.0%	▲ Add	6	SEC ↗
4	Bank Of America Corp /De/	2.48M	-1.4%	$240.64M	0.0%	▼ Trim	2	SEC ↗ ×6
5	Geode Capital Management ✦ (passive)	2.19M	+16.0%	$212.23M	0.0%	▲ Add	8	SEC ↗ ×2
6	PRIMECAP Management ✦	1.79M	-14.1%	$173.48M	0.1%	▼ Trim	8	SEC ↗
7	Sei Investments Co	1.68M	-0.2%	$163.17M	0.1%	▼ Trim	2	SEC ↗ ×2
8	Dimensional Fund Advisors Lp	1.41M	-18.0%	$136.94M	0.0%	▼ Trim	2	SEC ↗ ×5
9	Ameriprise Financial Inc	1.40M	+6.7%	$136.21M	0.0%	▲ Add	2	SEC ↗ ×5
10	Morgan Stanley ✦	1.31M	-42.4%	$126.95M	0.0%	▼ Trim	3	SEC ↗ ×10
11	Alliancebernstein L.P.	2.23M	+57.7%	$124.47M	0.0%	▲ Add	2	SEC ↗
12	Invesco Ltd.	1.24M	+272.0%	$120.11M	0.0%	▲ Add	2	SEC ↗ ×5
13	Charles Schwab Investment…	947.54K	-0.4%	$91.90M	0.0%	▼ Trim	2	SEC ↗
14	Jane Street Group, Llc	925.62K	+680.9%	$89.78M	0.1%	▲ Add	2	SEC ↗ ×3
15	Goldman Sachs Group ✦	873.52K	-1.3%	$84.72M	0.0%	▼ Trim	3	SEC ↗ ×6
16	Nuveen, LLC	849.72K	+20.4%	$82.41M	0.0%	▲ Add	2	SEC ↗ ×3
17	T. Rowe Price ✦	840.63K	-12.8%	$81.53M	0.0%	▼ Trim	8	SEC ↗ ×2
18	Northern Trust Corp	835.31K	+1.3%	$81.02M	0.0%	▲ Add	2	SEC ↗ ×6
19	Massachusetts Financial Services Co…	733.34K	-46.4%	$71.13M	0.0%	▼ Trim	2	SEC ↗ ×2
20	Bank of New York Mellon Corp	633.54K	-15.7%	$61.45M	0.0%	▼ Trim	2	SEC ↗ ×11
21	Arrowstreet Capital ✦	508.64K	-15.5%	$49.33M	0.0%	▼ Trim	2	SEC ↗
22	Franklin Resources Inc	493.77K	+71.7%	$47.89M	0.0%	▲ Add	2	SEC ↗ ×5
23	Jones Financial Companies Lllp	429.98K	+40273.7%	$42.11M	0.0%	▲ Add	2	SEC ↗ ×2
24	Royal Bank Of Canada	428.91K	-26.9%	$41.60M	0.0%	▼ Trim	2	SEC ↗ ×6
25	Fisher Asset Management ✦	425.99K	-2.3%	$41.32M	0.0%	▼ Trim	8	SEC ↗
26	Assenagon Asset Management S.A.	422.83K	-24.9%	$41.01M	0.1%	▼ Trim	2	SEC ↗
27	Principal Financial Group Inc	378.50K	+2.2%	$36.71M	0.0%	▲ Add	2	SEC ↗ ×2
28	Victory Capital Management Inc	365.81K	-70.9%	$35.48M	0.0%	▼ Trim	2	SEC ↗
29	Connor, Clark & Lunn Investment…	333.09K	+64.3%	$32.31M	0.1%	▲ Add	2	SEC ↗
30	Fidelity (FMR) ✦	325.83K	+1400.4%	$31.60M	0.0%	▲ Add	4	SEC ↗ ×3
31	Envestnet Asset Management Inc	281.16K	-21.6%	$27.27M	0.0%	▼ Trim	2	SEC ↗
32	JPMorgan Chase ✦	265.12K	-15.3%	$24.23M	0.0%	▼ Trim	3	SEC ↗ ×6
33	D. E. Shaw & Co. ✦	242.64K	+304.0%	$23.53M	0.0%	▲ Add	8	SEC ↗ ×2
34	Nomura Asset Management Co Ltd	239.90K	New	$23.27M	0.1%	New	1	SEC ↗
35	Prudential Financial Inc	238.73K	+76.3%	$23.15M	0.0%	▲ Add	2	SEC ↗ ×2
36	Wells Fargo & Company/Mn	224.53K	-28.8%	$21.78M	0.0%	▼ Trim	2	SEC ↗ ×3
37	AQR Capital Management ✦	215.01K	+5.0%	$20.85M	0.0%	▲ Add	8	SEC ↗ ×5
38	Two Sigma Investments ✦	213.46K	+87.7%	$20.70M	0.0%	▲ Add	8	SEC ↗
39	Rhumbline Advisers	204.98K	+0.3%	$19.88M	0.0%	▲ Add	2	SEC ↗
40	Citadel Advisors ✦	200.87K	+4.1%	$19.48M	0.0%	▲ Add	4	SEC ↗
41	Federated Hermes, Inc.	200.53K	+472.9%	$19.45M	0.0%	▲ Add	2	SEC ↗ ×3
42	UBS Group AG	200.38K	-29.3%	$19.43M	0.0%	▼ Trim	2	SEC ↗ ×3
43	Legal & General Group Plc	185.08K	-8.4%	$17.95M	0.0%	▼ Trim	2	SEC ↗ ×3
44	Millennium Management ✦	180.94K	+119.7%	$17.55M	0.0%	▲ Add	5	SEC ↗
45	First Eagle Investment Management…	179.85K	-33.2%	$17.44M	0.0%	▼ Trim	2	SEC ↗ ×2
46	Man Group plc	161.01K	+2042.2%	$15.62M	0.0%	▲ Add	2	SEC ↗ ×2
47	Qube Research & Technologies Ltd	160.37K	New	$15.55M	0.0%	New	1	SEC ↗
48	Deutsche Bank Ag\	160.09K	-26.6%	$15.53M	0.0%	▼ Trim	2	SEC ↗ ×3
49	UBS AM, a distinct business unit of…	157.77K	+2.6%	$15.30M	0.0%	▲ Add	2	SEC ↗ ×8
50	Citigroup Inc	154.62K	+561.3%	$15.00M	0.0%	▲ Add	2	SEC ↗ ×2
51	Swiss National Bank	153.40K	+0.8%	$14.88M	0.0%	▲ Add	2	SEC ↗
52	American Century Companies Inc	152.65K	-12.8%	$14.81M	0.0%	▼ Trim	2	SEC ↗
53	Tudor Investment Corp Et Al	141.28K	+178.4%	$13.70M	0.1%	▲ Add	2	SEC ↗
54	Bnp Paribas Financial Markets	120.82K	+25.9%	$11.72M	0.0%	▲ Add	2	SEC ↗
55	California Public Employees…	116.98K	New	$11.35M	0.0%	New	1	SEC ↗
56	Barclays Plc	109.67K	-10.7%	$10.64M	0.0%	▼ Trim	2	SEC ↗ ×4
57	Hrt Financial Lp	103.33K	+205.3%	$10.02M	0.0%	▲ Add	2	SEC ↗
58	Squarepoint Ops LLC	101.75K	+497.6%	$9.87M	0.0%	▲ Add	2	SEC ↗
59	First Trust Advisors Lp	100.37K	+410.9%	$9.74M	0.0%	▲ Add	2	SEC ↗
60	Marshall Wace ✦	99.72K	+45.2%	$9.67M	0.0%	▲ Add	2	SEC ↗ ×3
61	Russell Investments Group, Ltd.	92.25K	+107.1%	$8.91M	0.0%	▲ Add	2	SEC ↗ ×9
62	California State Teachers…	89.63K	+22.3%	$8.69M	0.0%	▲ Add	2	SEC ↗
63	Allspring Global Investments…	83.51K	-47.5%	$8.43M	0.0%	▼ Trim	2	SEC ↗ ×2
64	Wellington Management ✦	80.33K	New	$7.79M	0.0%	New	1	SEC ↗ ×4
65	Healthcare Of Ontario Pension Plan…	71.06K	-58.5%	$6.89M	0.0%	▼ Trim	2	SEC ↗
66	Fifth Third Bancorp	66.37K	+184.1%	$6.44M	0.0%	▲ Add	2	SEC ↗
67	Creative Planning	62.13K	+40.7%	$6.03M	0.0%	▲ Add	2	SEC ↗
68	State Of Wisconsin Investment Board	54.86K	-25.2%	$5.32M	0.0%	▼ Trim	2	SEC ↗
69	Bridgewater Associates ✦	50.22K	+93.3%	$4.87M	0.0%	▲ Add	2	SEC ↗
70	1832 Asset Management L.P.	49.90K	New	$4.84M	0.0%	New	1	SEC ↗
71	Susquehanna International Group, Llp	44.78K	+29.0%	$4.34M	0.0%	▲ Add	2	SEC ↗
72	Raymond James Financial Inc	43.33K	-68.4%	$4.12M	0.0%	▼ Trim	2	SEC ↗ ×3
73	Nomura Asset Management…	42.36K	-15.2%	$4.11M	0.0%	▼ Trim	2	SEC ↗
74	Manufacturers Life Insurance…	40.35K	+8.5%	$3.91M	0.0%	▲ Add	2	SEC ↗
75	MIRAE ASSET GLOBAL ETFS HOLDINGS…	36.52K	+0.9%	$3.54M	0.0%	▲ Add	2	SEC ↗
76	Cetera Investment Advisers	35.95K	-12.3%	$3.49M	0.0%	▼ Trim	2	SEC ↗
77	Janus Henderson Group Plc	35.57K	+8.2%	$3.45M	0.0%	▲ Add	2	SEC ↗
78	Mackenzie Financial Corp	33.98K	+348.2%	$3.30M	0.0%	▲ Add	2	SEC ↗
79	Credit Agricole S A	30.00K	New	$2.91M	0.0%	New	1	SEC ↗
80	Point72 Asset Management ✦	28.16K	-93.5%	$2.73M	0.0%	▼ Trim	3	SEC ↗
81	Voya Investment Management Llc	27.91K	-95.0%	$2.71M	0.0%	▼ Trim	2	SEC ↗ ×2
82	Mariner, LLC	26.25K	+9.7%	$2.55M	0.0%	▲ Add	2	SEC ↗
83	New York State Common Retirement…	25.23K	-90.3%	$2.45M	0.0%	▼ Trim	2	SEC ↗
84	Hsbc Holdings Plc	24.88K	New	$2.41M	0.0%	New	1	SEC ↗ ×2
85	Tidal Investments LLC	24.78K	+35.0%	$2.40M	0.0%	▲ Add	2	SEC ↗ ×2
86	Lazard Asset Management Llc	22.21K	New	$2.15M	0.0%	New	1	SEC ↗
87	Canada Pension Plan Investment Board	21.80K	+54.6%	$2.11M	0.0%	▲ Add	2	SEC ↗
88	Stifel Financial Corp	21.04K	-17.8%	$2.04M	0.0%	▼ Trim	2	SEC ↗ ×3
89	Zurcher Kantonalbank (Zurich…	19.13K	+18.0%	$1.86M	0.0%	▲ Add	2	SEC ↗
90	State Board Of Administration Of…	19.01K	-13.8%	$1.84M	0.0%	▼ Trim	2	SEC ↗
91	Quantinno Capital Management LP	18.49K	+12.9%	$1.79M	0.0%	▲ Add	2	SEC ↗
92	Osaic Holdings, Inc.	17.97K	+392.3%	$1.74M	0.0%	▲ Add	2	SEC ↗
93	Wealth Enhancement Advisory…	35.17K	+118.8%	$1.60M	0.0%	▲ Add	2	SEC ↗
94	HighTower Advisors, LLC	16.34K	+21.3%	$1.58M	0.0%	▲ Add	2	SEC ↗
95	Td Asset Management Inc	15.91K	New	$1.54M	0.0%	New	1	SEC ↗
96	Balyasny Asset Management L.P.	15.02K	New	$1.46M	0.0%	New	1	SEC ↗
97	Cwm, Llc	13.13K	-1.4%	$1.27M	0.0%	▼ Trim	2	SEC ↗
98	Pictet Asset Management Holding SA	12.30K	+13.1%	$1.19M	0.0%	▲ Add	2	SEC ↗
99	ProShare Advisors LLC	12.12K	-20.0%	$1.18M	0.0%	▼ Trim	2	SEC ↗
100	LPL Financial LLC	11.95K	+0.5%	$1.16M	0.0%	▲ Add	2	SEC ↗

“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.

New buyers

Nomura Asset Management Co Ltd	$23.27M	0.1%
Qube Research & Technologies…	$15.55M	0.0%
California Public Employees…	$11.35M	0.0%
Wellington Management	$7.79M	0.0%
1832 Asset Management L.P.	$4.84M	0.0%
Credit Agricole S A	$2.91M	0.0%
Hsbc Holdings Plc	$2.41M	0.0%
Lazard Asset Management Llc	$2.15M	0.0%
Td Asset Management Inc	$1.54M	0.0%
Balyasny Asset Management L.P.	$1.46M	0.0%

Exited

Norges Bank	$31.45M	was 0.0%
Holocene Advisors, LP	$1.39M	was 0.0%
Group One Trading Llc	$707,514	was 0.0%
Danske Bank A/S	$5,578	was 0.0%

Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 389 holders, 74.32M shares, $6.80B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.

Frequently co-owned

What else this security's tracked holders most often hold: shared-ownership counts, not fundamental relationships.

MSFT125shared holders ORCL124shared holders AMZN124shared holders GOOGL124shared holders META124shared holders

Insider transactions

Open-market purchases (P)

No open-market insider purchases in our coverage window.

Open-market sales (S)

Oct 14 SLESSOR MIKE

Officer, Director · 1.20K sh · $151,104

Oct 14 SLESSOR MIKE

Officer, Director · 2.19K sh · $272,685

Oct 14 SLESSOR MIKE

Officer, Director · 7.70K sh · $965,648

Sep 16 SLESSOR MIKE

Officer, Director · 1.00K sh · $105,800

Sep 16 SLESSOR MIKE

Officer, Director · 8.74K sh · $910,920

Sep 16 SLESSOR MIKE

Officer, Director · 7.77K sh · $817,098

Sep 03 STEVEN-WAISS KELLEY

Director · 2.10K sh · $201,810

Aug 14 SLESSOR MIKE

Officer, Director · 2.48K sh · $319,483

Aug 14 SLESSOR MIKE

Officer, Director · 2.89K sh · $374,659

Aug 14 SLESSOR MIKE

Officer, Director · 3.28K sh · $428,432

Awards, exercises and tax withholding are never counted as buys or sales here. Methodology

Beneficial ownership

Aug 14 SC 13G/A: EARNEST PARTNERS LLC

View original SEC filing ↗

Jul 28 SC 13G/A: BlackRock, Inc.

View original SEC filing ↗

Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR. Reporting period: Q1 2026 · Methodology · Get this via the API

☆ FORM

New buyers

Exited

Open-market purchases (P)

Open-market sales (S)

FORM