Ken Griffin
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Ken Griffin’s PDF Solutions PDFS Stock Holding History

Ken Griffin’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
Q1 		$373K Buy
+11,400
New +$373K ﹤0.01% 9969
2025
Q4 		– Sell
-8,700
Closed -$225K – 13708
2025
Q3 		$225K Buy
+8,700
New +$190K ﹤0.01% 11016
2025
Q2 		– Sell
-6,400
Closed -$122K – 14425
2025
Q1 		$122K Buy
6,400
+4,200
+191% +$103K ﹤0.01% 11181
2024
Q4 		$59.6K Sell
2,200
-300
-12% -$9.04K ﹤0.01% 12188
2024
Q3 		$79.2K Buy
2,500
+900
+56% +$29.2K ﹤0.01% 11424
2024
Q2 		$58.2K Sell
1,600
-2,200
-58% -$73.6K ﹤0.01% 11593
2024
Q1 		$128K Buy
3,800
+3,500
+1,167% +$115K ﹤0.01% 11013
2023
Q4 		$9.64K Sell
300
-2,800
-90% -$84.9K ﹤0.01% 13141
2023
Q3 		$100K Sell
3,100
-1,000
-24% -$38.3K ﹤0.01% 10892
2023
Q2 		$185K Sell
4,100
-5,300
-56% -$216K ﹤0.01% 10012
2023
Q1 		$399K Buy
9,400
+9,000
+2,250% +$315K ﹤0.01% 8779
2022
Q4 		$11.4K Buy
+400
New +$10.8K ﹤0.01% 13573
2019
Q3 		– Sell
-171,100
Closed -$2.25M – 9606
2019
Q2 		$2.25M Buy
171,100
+68,800
+67% +$882K ﹤0.01% 4317
2019
Q1 		$1.26M Buy
+102,300
New +$1.13M ﹤0.01% 5189
2016
Q1 		– Sell
-800
Closed -$9K – 7653
2015
Q4 		$9K Buy
800
+700
+700% +$7.59K ﹤0.01% 8307
2015
Q3 		$1K Buy
+100
New +$1.26K ﹤0.01% 8785
2015
Q2 		– Sell
-2,600
Closed -$47K – 8979
2015
Q1 		$47K Buy
2,600
+1,500
+136% +$26.1K ﹤0.01% 7419
2014
Q4 		$16K Buy
+1,100
New +$14.4K ﹤0.01% 7958

Other funds holding PDFS

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
NIM
Needham Investment Management New York $1.96B AUM 101.23% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
RIM
Ranger Investment Management Dallas, Texas $1.38B AUM 24.55% 1-Year Est. Return
William Blair Investment Management
William Blair Investment Management Chicago, Illinois $33.3B AUM 44.76% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Barrow, Hanley, Mewhinney & Strauss
Barrow, Hanley, Mewhinney & Strauss Dallas, Texas $30.5B AUM 29.95% 1-Year Est. Return
OAM
Ophir Asset Management Sydney, Australia $859M AUM 59.08% 1-Year Est. Return
SCM
Snyder Capital Management San Francisco, California $5.16B AUM 26.72% 1-Year Est. Return

Ken Griffin's PDFS Position: Q1 2026 in Review

Ken Griffin reduced its PDF Solutions (PDFS) stake by 13% in Q1 2026, selling an estimated $172K and leaving 34,588 shares worth $1.13M. The position accounts for ﹤0.01% of the portfolio, ranked #7390.

Ken Griffin first reported a position in PDFS in Q2 2013 and has held it in 44 quarters since. The position peaked at $7.55M in Q1 2023. 208 funds tracked by Wall St. Rank hold PDFS as of Q1 2026.

  • Ken Griffin held 34,588 shares of PDF Solutions worth $1.13M as of Q1 2026.
  • Ken Griffin sold 5,268 PDF Solutions shares in Q1 2026, an estimated $172K.
  • PDF Solutions made up ﹤0.01% of Ken Griffin's portfolio in Q1 2026, its #7390 holding.
  • Ken Griffin first reported a position in PDF Solutions in Q2 2013 and has held it in 44 quarters since.
  • Ken Griffin's PDF Solutions position peaked at $7.55M in Q1 2023.
  • 208 funds tracked by Wall St. Rank held PDF Solutions as of Q1 2026.

Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.