Calamos Advisors’s One Stop Systems OSS Stock Holding History

Calamos Advisors’s Portfolio OSS Stock Details OSS Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$581K	Buy	+31,973	New	+$445K	﹤0.01%	820

Other funds holding OSS

Cambridge Investment Research Advisors Fairfield, Iowa $44.6B AUM 28.94% 1-Year Est. Return

New York State Common Retirement Fund Albany, New York $79.3B AUM 43.63% 1-Year Est. Return

Penbrook Management New York $157M AUM 46.57% 1-Year Est. Return

OCA

Optimus Capital Advisors Coppel, Texas $186M AUM

BTWM

Baker Tilly Wealth Management Madison, Wisconsin $471M AUM 23.36% 1-Year Est. Return

LWM

Lodestone Wealth Management Spokane, Washington $283M AUM 33.76% 1-Year Est. Return

AWM

Apollon Wealth Management Mount Pleasant, South Carolina $8.23B AUM 30.88% 1-Year Est. Return

TCWM

Total Clarity Wealth Management St. Charles, Illinois $515M AUM 27.37% 1-Year Est. Return

PFSRSONJ

Police & Firemen's Retirement System of New Jersey Trenton, New Jersey $13.3B AUM 45.46% 1-Year Est. Return

STRS Ohio Columbus, Ohio $26.7B AUM 43.32% 1-Year Est. Return

Calamos Advisors's OSS Position: Q2 2026 in Review

Calamos Advisors opened a new position in One Stop Systems (OSS) in Q2 2026: 31,973 shares worth $581K. The stake represents ﹤0.01% of the portfolio and ranks #820 among its holdings.

16 funds tracked by Wall St. Rank hold OSS as of Q2 2026.

Calamos Advisors held 31,973 shares of One Stop Systems worth $581K as of Q2 2026.
One Stop Systems was a new Calamos Advisors position in Q2 2026.
One Stop Systems made up ﹤0.01% of Calamos Advisors's portfolio in Q2 2026, its #820 holding.
16 funds tracked by Wall St. Rank held One Stop Systems as of Q2 2026.

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