Ken Griffin
KOSS icon

Ken Griffin’s Koss Corp KOSS Stock Holding History

Ken Griffin’s Portfolio KOSS Stock Details KOSS Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q1 		– Sell
-28,725
Closed -$212K – 15075
2024
Q4 		$212K Buy
+28,725
New +$210K ﹤0.01% 10347
2024
Q2 		– Sell
-14,618
Closed -$37.6K – 14911
2024
Q1 		$37.6K Buy
+14,618
New +$40.7K ﹤0.01% 12461
2023
Q3 		– Sell
-15,475
Closed -$57.3K – 14728
2023
Q2 		$57.3K Buy
+15,475
New +$62.5K ﹤0.01% 11645
2023
Q1 		– Sell
-17,182
Closed -$83.8K – 15128
2022
Q4 		$83.8K Buy
+17,182
New +$106K ﹤0.01% 11457
2022
Q2 		– Sell
-12,078
Closed -$111K – 13535
2022
Q1 		$111K Buy
+12,078
New +$103K ﹤0.01% 12176
2021
Q4 		– Sell
-11,644
Closed -$190K – 14320
2021
Q3 		$190K Sell
11,644
-6,899
-37% -$127K ﹤0.01% 12060
2021
Q2 		$431K Sell
18,543
-15,526
-46% -$333K ﹤0.01% 10388
2021
Q1 		$766K Buy
+34,069
New +$602K ﹤0.01% 8743
2020
Q1 		– Sell
-18,542
Closed -$29K – 9915
2019
Q4 		$29K Buy
+18,542
New +$31.6K ﹤0.01% 8877
2018
Q4 		– Sell
-10,259
Closed -$29K – 9474
2018
Q3 		$29K Buy
+10,259
New +$29.7K ﹤0.01% 8937
2018
Q1 		– Sell
-11,246
Closed -$35K – 8543
2017
Q4 		$35K Buy
+11,246
New +$18.1K ﹤0.01% 7732
2017
Q2 		– Sell
-14,559
Closed -$31K – 7801
2017
Q1 		$31K Buy
+14,559
New +$33.3K ﹤0.01% 7161
2016
Q3 		– Sell
-12,538
Closed -$25K – 7498
2016
Q2 		$25K Buy
+12,538
New +$26.2K ﹤0.01% 6551
2016
Q1 		– Sell
-12,192
Closed -$24K – 7394
2015
Q4 		$24K Buy
+12,192
New +$25.9K ﹤0.01% 7802

Other funds holding KOSS

Lido Advisors
Lido Advisors Los Angeles, California $36.8B AUM 26.6% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Northern Trust
Northern Trust Chicago, Illinois $860B AUM 41.15% 1-Year Est. Return
JIR
James Investment Research Alpha, Ohio $984M AUM 36.03% 1-Year Est. Return
NA
NewEdge Advisors New Orleans, Louisiana $33.6B AUM 31.03% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return
PNC Financial Services Group
PNC Financial Services Group Pittsburgh, Pennsylvania $202B AUM 37.79% 1-Year Est. Return

Ken Griffin's KOSS Position: Q1 2025 in Review

Ken Griffin sold out of Koss Corp (KOSS) in Q1 2025, closing a stake of 28,725 shares — an estimated $212K sold.

Ken Griffin first reported a position in KOSS in Q4 2015 and held it in 14 quarters. The position peaked at $766K in Q1 2021. 22 funds tracked by Wall St. Rank hold KOSS as of Q1 2025.

  • Ken Griffin reported no remaining Koss Corp position as of Q1 2025 after selling out during the quarter.
  • Ken Griffin sold 28,725 Koss Corp shares in Q1 2025, an estimated $212K.
  • Ken Griffin first reported a position in Koss Corp in Q4 2015 and held it in 14 quarters.
  • Ken Griffin's Koss Corp position peaked at $766K in Q1 2021.
  • 22 funds tracked by Wall St. Rank held Koss Corp as of Q1 2025.

Based on Citadel Advisors's 13F filing for Q1 2025, filed 15 May 2025.