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
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 $5.72T AUM 30.48% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
NIM
Needham Investment Management New York $1.96B AUM 101.23% 1-Year Est. Return
William Blair Investment Management
William Blair Investment Management Chicago, Illinois $30.3B AUM 33.75% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
SM
Samjo Management New York $231M AUM 13.04% 1-Year Est. Return
RIM
Ranger Investment Management Dallas, Texas $1.38B AUM 24.55% 1-Year Est. Return
EA
Emerald Advisers Leola, Pennsylvania $3.16B AUM 109.58% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
SCM
Snyder Capital Management San Francisco, California $5.16B AUM 26.72% 1-Year Est. Return

State of Wisconsin Investment Board's PDFS Position: Q3 2025 in Review

State of Wisconsin Investment Board sold out of PDF Solutions (PDFS) in Q3 2025, closing a stake of 13,690 shares — an estimated $293K sold.

State of Wisconsin Investment Board first reported a position in PDFS in Q1 2017 and held it in 16 quarters. The position peaked at $3.74M in Q2 2017. 183 funds tracked by Wall St. Rank hold PDFS as of Q3 2025.

  • State of Wisconsin Investment Board reported no remaining PDF Solutions position as of Q3 2025 after selling out during the quarter.
  • State of Wisconsin Investment Board sold 13,690 PDF Solutions shares in Q3 2025, an estimated $293K.
  • State of Wisconsin Investment Board first reported a position in PDF Solutions in Q1 2017 and held it in 16 quarters.
  • State of Wisconsin Investment Board's PDF Solutions position peaked at $3.74M in Q2 2017.
  • 183 funds tracked by Wall St. Rank held PDF Solutions as of Q3 2025.

Based on State of Wisconsin Investment Board's 13F filing for Q3 2025, filed 14 Nov 2025.