Citadel Advisors
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Citadel Advisors’s Koss Corp KOSS Stock Holding History

Citadel Advisors’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
2026
Q2 		$133K Buy
+33,058
New +$134K ﹤0.01% 12448
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

Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
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
Vanguard Fiduciary Trust
Vanguard Fiduciary Trust Malvern, Pennsylvania $454B AUM
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 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
Northern Trust
Northern Trust Chicago, Illinois $860B AUM 41.15% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return

Citadel Advisors's KOSS Position: Q2 2026 in Review

Citadel Advisors opened a new position in Koss Corp (KOSS) in Q2 2026: 33,058 shares worth $133K. The stake represents ﹤0.01% of the portfolio and ranks #12448 among its holdings. This is a return to the name: Citadel Advisors previously reported a position in KOSS as recently as Q4 2024.

Citadel Advisors first reported a position in KOSS in Q4 2015 and has held it in 15 quarters since. The position peaked at $766K in Q1 2021. 23 funds tracked by Wall St. Rank hold KOSS as of Q2 2026.

  • Citadel Advisors held 33,058 shares of Koss Corp worth $133K as of Q2 2026.
  • Koss Corp was a new Citadel Advisors position in Q2 2026.
  • Koss Corp made up ﹤0.01% of Citadel Advisors's portfolio in Q2 2026, its #12448 holding.
  • Citadel Advisors first reported a position in Koss Corp in Q4 2015 and has held it in 15 quarters since.
  • Citadel Advisors's Koss Corp position peaked at $766K in Q1 2021.
  • 23 funds tracked by Wall St. Rank held Koss Corp as of Q2 2026.

Based on Citadel Advisors's 13F filing for Q2 2026, filed 14 Aug 2026.