State of Wisconsin Investment Board
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State of Wisconsin Investment Board’s PDF Solutions PDFS Stock Holding History

State of Wisconsin Investment Board’s Portfolio PDFS Stock Details PDFS Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$303K Buy
+4,282
New +$212K ﹤0.01% 2281
2025
Q3 		– Sell
-13,690
Closed -$293K – 2484
2025
Q2 		$293K Sell
13,690
-47,846
-78% -$906K ﹤0.01% 2069
2025
Q1 		$1.18M Buy
61,536
+467
+0.8% +$11.5K ﹤0.01% 1428
2024
Q4 		$1.65M Buy
61,069
+2,760
+5% +$83.2K ﹤0.01% 1353
2024
Q3 		$1.85M Hold
58,309
– – ﹤0.01% 1342
2024
Q2 		$2.12M Buy
58,309
+16,422
+39% +$549K 0.01% 1268
2024
Q1 		$1.41M Buy
41,887
+19,494
+87% +$639K ﹤0.01% 1335
2023
Q4 		$720K Buy
22,393
+7,505
+50% +$228K ﹤0.01% 1501
2023
Q3 		$482K Buy
14,888
+8,800
+145% +$337K ﹤0.01% 1794
2023
Q2 		$275K Buy
+6,088
New +$248K ﹤0.01% 2024
2021
Q1 		– Sell
-15,000
Closed -$324K – 2080
2020
Q4 		$324K Sell
15,000
-2,000
-12% -$42K ﹤0.01% 1756
2020
Q3 		$318K Buy
+17,000
New +$350K ﹤0.01% 1806
2018
Q2 		– Sell
-35,000
Closed -$408K – 1488
2018
Q1 		$408K Sell
35,000
-192,478
-85% -$2.56M ﹤0.01% 1336
2017
Q4 		$3.57M Hold
227,478
– – 0.01% 905
2017
Q3 		$3.52M Hold
227,478
– – 0.01% 907
2017
Q2 		$3.74M Buy
227,478
+165,357
+266% +$3.07M 0.01% 882
2017
Q1 		$1.41M Buy
+62,121
New +$1.38M 0.01% 949

Other funds holding PDFS

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
NIM
Needham Investment Management New York $3.33B AUM 163.16% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
WA
Wasatch Advisors Salt Lake City, Utah $15.3B AUM 25.06% 1-Year Est. Return
Barrow, Hanley, Mewhinney & Strauss
Barrow, Hanley, Mewhinney & Strauss Dallas, Texas $33B AUM 40.62% 1-Year Est. Return
RIM
Ranger Investment Management Dallas, Texas $1.58B AUM 51% 1-Year Est. Return
SCM
Snyder Capital Management San Francisco, California $5.79B AUM 33.56% 1-Year Est. Return
JT
Jupiter Topco New York $245B AUM

State of Wisconsin Investment Board's PDFS Position: Q2 2026 in Review

State of Wisconsin Investment Board opened a new position in PDF Solutions (PDFS) in Q2 2026: 4,282 shares worth $303K. The stake represents ﹤0.01% of the portfolio and ranks #2281 among its holdings. This is a return to the name: State of Wisconsin Investment Board previously reported a position in PDFS as recently as Q2 2025.

State of Wisconsin Investment Board first reported a position in PDFS in Q1 2017 and has held it in 17 quarters since. The position peaked at $3.74M in Q2 2017. 283 funds tracked by Wall St. Rank hold PDFS as of Q2 2026.

  • State of Wisconsin Investment Board held 4,282 shares of PDF Solutions worth $303K as of Q2 2026.
  • PDF Solutions was a new State of Wisconsin Investment Board position in Q2 2026.
  • PDF Solutions made up ﹤0.01% of State of Wisconsin Investment Board's portfolio in Q2 2026, its #2281 holding.
  • State of Wisconsin Investment Board first reported a position in PDF Solutions in Q1 2017 and has held it in 17 quarters since.
  • State of Wisconsin Investment Board's PDF Solutions position peaked at $3.74M in Q2 2017.
  • 283 funds tracked by Wall St. Rank held PDF Solutions as of Q2 2026.

Based on State of Wisconsin Investment Board's 13F filing for Q2 2026, filed 14 Aug 2026.