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Penbrook Management’s One Stop Systems OSS Stock Holding History

Penbrook Management’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
Q3 		$333K Sell
38,200
-675
-2% -$7.88K 0.2% 79
2026
Q2 		$707K Sell
38,875
-7,865
-17% -$110K 0.45% 56
2026
Q1 		$354K Hold
46,740
– – 0.27% 68
2025
Q4 		$336K Sell
46,740
-673
-1% -$3.98K 0.23% 69
2025
Q3 		$254K Buy
+47,413
New +$260K 0.18% 81

Other funds holding OSS

Essex Investment Management
Essex Investment Management Boston, Massachusetts $675M AUM 61.81% 1-Year Est. Return
LWM
Lodestone Wealth Management Spokane, Washington $297M AUM 25.27% 1-Year Est. Return
BTWM
Baker Tilly Wealth Management Madison, Wisconsin $510M AUM 18.32% 1-Year Est. Return
UPWML
UMB Private Wealth Management, LLC Kansas City, Missouri $103M AUM
State of Alaska Department of Revenue
State of Alaska Department of Revenue Juneau, Alaska $9.6B AUM 34.67% 1-Year Est. Return
Farther Finance Advisors
Farther Finance Advisors San Francisco, California $14.2B AUM 18.33% 1-Year Est. Return
GAMMA Investing
GAMMA Investing Foster City, California $2.96B AUM 34.38% 1-Year Est. Return

Penbrook Management's OSS Position: Q3 2026 in Review

Penbrook Management reduced its One Stop Systems (OSS) stake by 1.7% in Q3 2026, selling an estimated $7.88K and leaving 38,200 shares worth $333K. The position accounts for 0.2% of the portfolio, ranked #79.

Penbrook Management first reported a position in OSS in Q3 2025 and has held it in 5 quarters since. The position peaked at $707K in Q2 2026. 8 funds tracked by Wall St. Rank hold OSS as of Q3 2026.

  • Penbrook Management held 38,200 shares of One Stop Systems worth $333K as of Q3 2026.
  • Penbrook Management sold 675 One Stop Systems shares in Q3 2026, an estimated $7.88K.
  • One Stop Systems made up 0.2% of Penbrook Management's portfolio in Q3 2026, its #79 holding.
  • Penbrook Management first reported a position in One Stop Systems in Q3 2025 and has held it in 5 quarters since.
  • Penbrook Management's One Stop Systems position peaked at $707K in Q2 2026.
  • 8 funds tracked by Wall St. Rank held One Stop Systems as of Q3 2026.

Based on Penbrook Management's 13F filing for Q3 2026, filed 16 Oct 2026.