Citadel Advisors
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Citadel Advisors’s PDF Solutions PDFS Stock Holding History

Citadel Advisors’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 		$1.55M Buy
21,900
+10,500
+92% +$520K ﹤0.01% 7124
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 $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

Citadel Advisors's PDFS Position: Q2 2026 in Review

Citadel Advisors increased its PDF Solutions (PDFS) stake by 144% in Q2 2026, buying an estimated $2.47M and bringing the position to 84,419 shares worth $5.98M. The position accounts for ﹤0.01% of the portfolio, ranked #4424.

Citadel Advisors first reported a position in PDFS in Q2 2013 and has held it in 45 quarters since. The position peaked at $7.55M in Q1 2023. 284 funds tracked by Wall St. Rank hold PDFS as of Q2 2026.

  • Citadel Advisors held 84,419 shares of PDF Solutions worth $5.98M as of Q2 2026.
  • Citadel Advisors bought 49,831 PDF Solutions shares in Q2 2026, an estimated $2.47M.
  • PDF Solutions made up ﹤0.01% of Citadel Advisors's portfolio in Q2 2026, its #4424 holding.
  • Citadel Advisors first reported a position in PDF Solutions in Q2 2013 and has held it in 45 quarters since.
  • Citadel Advisors's PDF Solutions position peaked at $7.55M in Q1 2023.
  • 284 funds tracked by Wall St. Rank held PDF Solutions as of Q2 2026.

Based on Citadel Advisors's 13F filing for Q2 2026, filed 14 Aug 2026.