Calamos Advisors
PDFS icon

Calamos Advisors’s PDF Solutions PDFS Stock Holding History

Calamos 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 		$1.48M Buy
+20,857
New +$1.03M ﹤0.01% 700
2023
Q2 		– Sell
-36,876
Closed -$1.56M – 1044
2023
Q1 		$1.56M Buy
+36,876
New +$1.29M 0.01% 767

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

Calamos Advisors's PDFS Position: Q2 2026 in Review

Calamos Advisors opened a new position in PDF Solutions (PDFS) in Q2 2026: 20,857 shares worth $1.48M. The stake represents ﹤0.01% of the portfolio and ranks #700 among its holdings. This is a return to the name: Calamos Advisors previously reported a position in PDFS as recently as Q1 2023.

Calamos Advisors first reported a position in PDFS in Q1 2023 and has held it in 2 quarters since. The position peaked at $1.56M in Q1 2023. 284 funds tracked by Wall St. Rank hold PDFS as of Q2 2026.

  • Calamos Advisors held 20,857 shares of PDF Solutions worth $1.48M as of Q2 2026.
  • PDF Solutions was a new Calamos Advisors position in Q2 2026.
  • PDF Solutions made up ﹤0.01% of Calamos Advisors's portfolio in Q2 2026, its #700 holding.
  • Calamos Advisors first reported a position in PDF Solutions in Q1 2023 and has held it in 2 quarters since.
  • Calamos Advisors's PDF Solutions position peaked at $1.56M in Q1 2023.
  • 284 funds tracked by Wall St. Rank held PDF Solutions as of Q2 2026.

Based on Calamos Advisors's 13F filing for Q2 2026, filed 31 Jul 2026.