Tower Research Capital (TRC)’s PDF Solutions PDFS Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2026
Q1
$74.1K Sell
2,264
-1,099
-33% -$35.9K ﹤0.01% 2418
2025
Q4
$95.9K Buy
3,363
+1,628
+94% +$45.1K ﹤0.01% 1974
2025
Q3
$44.8K Sell
1,735
-1,657
-49% -$36.2K ﹤0.01% 2617
2025
Q2
$72.5K Buy
3,392
+2,442
+257% +$46.2K ﹤0.01% 2649
2025
Q1
$18.2K Sell
950
-749
-44% -$18.4K ﹤0.01% 3060
2024
Q4
$46K Sell
1,699
-276
-14% -$8.32K ﹤0.01% 2611
2024
Q3
$62.6K Sell
1,975
-4,329
-69% -$141K ﹤0.01% 2590
2024
Q2
$229K Sell
6,304
-946
-13% -$31.6K ﹤0.01% 1961
2024
Q1
$244K Sell
7,250
-1,432
-16% -$47K 0.01% 1295
2023
Q4
$279K Buy
8,682
+7,930
+1,055% +$240K ﹤0.01% 1829
2023
Q3
$24.4K Buy
752
+225
+43% +$8.62K ﹤0.01% 3198
2023
Q2
$23.8K Sell
527
-141
-21% -$5.75K ﹤0.01% 3231
2023
Q1
$28K Sell
668
-1,769
-73% -$62K ﹤0.01% 3074
2022
Q4
$69K Sell
2,437
-2,597
-52% -$70.1K ﹤0.01% 2124
2022
Q3
$124K Buy
5,034
+3,579
+246% +$90.4K ﹤0.01% 2378
2022
Q2
$31K Buy
1,455
+965
+197% +$22.3K ﹤0.01% 3348
2022
Q1
$14K Sell
490
-993
-67% -$27.7K ﹤0.01% 3908
2021
Q4
$47K Sell
1,483
-6,253
-81% -$174K ﹤0.01% 2815
2021
Q3
$179K Buy
7,736
+5,363
+226% +$110K ﹤0.01% 1918
2021
Q2
$43K Sell
2,373
-2,608
-52% -$46.7K ﹤0.01% 3149
2021
Q1
$88K Buy
4,981
+3,859
+344% +$76.5K ﹤0.01% 2684
2020
Q4
$24K Sell
1,122
-24,036
-96% -$505K ﹤0.01% 3750
2020
Q3
$471K Buy
25,158
+22,256
+767% +$458K 0.01% 1741
2020
Q2
$57K Buy
+2,902
New +$47.2K ﹤0.01% 2951
2019
Q4
Sell
-973
Closed -$13K 4167
2019
Q3
$13K Buy
973
+299
+44% +$3.77K ﹤0.01% 2777
2019
Q2
$9K Buy
674
+60
+10% +$770 ﹤0.01% 2623
2019
Q1
$8K Sell
614
-2,048
-77% -$22.6K ﹤0.01% 2815
2018
Q4
$22K Sell
2,662
-2,178
-45% -$18.5K ﹤0.01% 1877
2018
Q3
$44K Buy
4,840
+4,541
+1,519% +$45.7K ﹤0.01% 1834
2018
Q2
$4K Buy
+299
New +$3.57K ﹤0.01% 3152
2017
Q4
Sell
-4,757
Closed -$74K 3881
2017
Q3
$74K Buy
+4,757
New +$76.7K 0.01% 1631
2017
Q1
Sell
-1,051
Closed -$23K 3691
2016
Q4
$23K Buy
1,051
+405
+63% +$8.47K ﹤0.01% 2018
2016
Q3
$12K Sell
646
-1,035
-62% -$16.9K ﹤0.01% 1945
2016
Q2
$24K Buy
+1,681
New +$22.8K ﹤0.01% 2093
2016
Q1
Sell
-100
Closed -$1K 4711
2015
Q4
$1K Sell
100
-16,512
-99% -$179K ﹤0.01% 4134
2015
Q3
$166K Buy
16,612
+11,233
+209% +$141K 0.02% 335
2015
Q2
$86K Buy
5,379
+4,435
+470% +$76.3K 0.01% 963
2015
Q1
$17K Sell
944
-256
-21% -$4.45K ﹤0.01% 2381
2014
Q4
$18K Sell
1,200
-1,479
-55% -$19.4K ﹤0.01% 1673
2014
Q3
$34K Sell
2,679
-64
-2% -$1.27K ﹤0.01% 1861
2014
Q2
$58K Buy
2,743
+825
+43% +$15.8K 0.01% 1197
2014
Q1
$35K Buy
1,918
+1,718
+859% +$37.9K ﹤0.01% 1358
2013
Q4
$5K Sell
200
-899
-82% -$20.7K ﹤0.01% 3521
2013
Q3
$23K Buy
1,099
+499
+83% +$10.3K ﹤0.01% 2580
2013
Q2
$11K Buy
+600
New +$10.4K ﹤0.01% 2288

Other funds holding PDFS

Tower Research Capital (TRC)'s PDFS Position: Q1 2026 in Review

Tower Research Capital (TRC) reduced its PDF Solutions (PDFS) stake by 33% in Q1 2026, selling an estimated $35.9K and leaving 2,264 shares worth $74.1K. The position accounts for ﹤0.01% of the portfolio, ranked #2418.

Tower Research Capital (TRC) first reported a position in PDFS in Q2 2013 and has held it in 45 quarters since. The position peaked at $471K in Q3 2020. 208 funds tracked by Wall St. Rank hold PDFS as of Q1 2026.

  • Tower Research Capital (TRC) held 2,264 shares of PDF Solutions worth $74.1K as of Q1 2026.
  • Tower Research Capital (TRC) sold 1,099 PDF Solutions shares in Q1 2026, an estimated $35.9K.
  • PDF Solutions made up ﹤0.01% of Tower Research Capital (TRC)'s portfolio in Q1 2026, its #2418 holding.
  • Tower Research Capital (TRC) first reported a position in PDF Solutions in Q2 2013 and has held it in 45 quarters since.
  • Tower Research Capital (TRC)'s PDF Solutions position peaked at $471K in Q3 2020.
  • 208 funds tracked by Wall St. Rank held PDF Solutions as of Q1 2026.

Based on Tower Research Capital (TRC)'s 13F filing for Q1 2026, filed 15 May 2026.