Janus Henderson Group
KOS icon

Janus Henderson Group’s Kosmos Energy KOS Stock Holding History

Janus Henderson Group’s Portfolio KOS Stock Details KOS Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$586K Hold
211,288
– – ﹤0.01% 1941
2025
Q4 		$191K Hold
211,288
– – ﹤0.01% 2355
2025
Q3 		$350K Hold
211,288
– – ﹤0.01% 2142
2025
Q2 		$364K Hold
211,288
– – ﹤0.01% 2094
2025
Q1 		$468K Hold
211,288
– – ﹤0.01% 1997
2024
Q4 		$724K Hold
211,288
– – ﹤0.01% 1846
2024
Q3 		$853K Hold
211,288
– – ﹤0.01% 1755
2024
Q2 		$1.17M Sell
211,288
-2,332
-1% -$13.6K ﹤0.01% 1542
2024
Q1 		$1.27M Buy
213,620
+6
+0% +$36 ﹤0.01% 1513
2023
Q4 		$1.43M Sell
213,614
-355
-0.2% -$2.48K ﹤0.01% 1430
2023
Q3 		$1.75M Buy
213,969
+12
+0% +$85 ﹤0.01% 1263
2023
Q2 		$1.28M Sell
213,957
-223
-0.1% -$1.45K ﹤0.01% 1479
2023
Q1 		$1.59M Buy
214,180
+133,934
+167% +$981K ﹤0.01% 1385
2022
Q4 		$510K Sell
80,246
-80,246
-50% -$501K ﹤0.01% 1708
2022
Q3 		$828K Buy
160,492
+80,246
+100% +$486K ﹤0.01% 1737
2022
Q2 		$496K Hold
80,246
– – ﹤0.01% 1773
2022
Q1 		$577K Hold
80,246
– – ﹤0.01% 1811
2021
Q4 		$278K Buy
80,246
+39,944
+99% +$143K ﹤0.01% 2234
2021
Q3 		$119K Buy
+40,302
New +$98.3K ﹤0.01% 2137
2020
Q1 		– Sell
-898,803
Closed -$5.12M – 1370
2019
Q4 		$5.12M Sell
898,803
-850,590
-49% -$5.13M ﹤0.01% 1051
2019
Q3 		$10.9M Sell
1,749,393
-903,025
-34% -$5.55M 0.01% 936
2019
Q2 		$16.6M Sell
2,652,418
-5,654,497
-68% -$36.1M 0.01% 832
2019
Q1 		$51.9M Sell
8,306,915
-10,263,085
-55% -$56.9M 0.03% 564
2018
Q4 		$75.3M Buy
18,570,000
+3,040,000
+20% +$18.8M 0.05% 432
2018
Q3 		$145M Sell
15,530,000
-4,750,000
-23% -$40.1M 0.08% 302
2018
Q2 		$168M Buy
20,280,000
+152,450
+0.8% +$1.11M 0.1% 260
2018
Q1 		$127M Buy
20,127,550
+1,377,550
+7% +$8.63M 0.07% 316
2017
Q4 		$129M Buy
18,750,000
+11,130,695
+146% +$84.8M 0.08% 305
2017
Q3 		$60.6M Buy
7,619,305
+2,174,305
+40% +$15M 0.04% 472
2017
Q2 		$34.9M Buy
+5,445,000
New +$34.5M 0.02% 610

Other funds holding KOS

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
EPIM
Equinox Partners Investment Management Stamford, Connecticut $245M AUM 225.58% 1-Year Est. Return
D.E. Shaw & Co
D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return
Hotchkis & Wiley Capital Management
Hotchkis & Wiley Capital Management Los Angeles, California $32.4B AUM 17.21% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $124B AUM 33.93% 1-Year Est. Return
Grantham, Mayo, Van Otterloo & Co (GMO)
Grantham, Mayo, Van Otterloo & Co (GMO) Boston, Massachusetts $39.1B AUM 28.69% 1-Year Est. Return
Charles Schwab
Charles Schwab San Francisco, California $654B AUM 26.35% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return

Janus Henderson Group's KOS Position: Q1 2026 in Review

Janus Henderson Group held its Kosmos Energy (KOS) position steady in Q1 2026 at 211,288 shares worth $586K. The position accounts for ﹤0.01% of the portfolio, ranked #1941.

Janus Henderson Group first reported a position in KOS in Q2 2017 and has held it in 30 quarters since. The position peaked at $168M in Q2 2018. 262 funds tracked by Wall St. Rank hold KOS as of Q1 2026.

  • Janus Henderson Group held 211,288 shares of Kosmos Energy worth $586K as of Q1 2026.
  • Janus Henderson Group left its Kosmos Energy share count unchanged in Q1 2026.
  • Kosmos Energy made up ﹤0.01% of Janus Henderson Group's portfolio in Q1 2026, its #1941 holding.
  • Janus Henderson Group first reported a position in Kosmos Energy in Q2 2017 and has held it in 30 quarters since.
  • Janus Henderson Group's Kosmos Energy position peaked at $168M in Q2 2018.
  • 262 funds tracked by Wall St. Rank held Kosmos Energy as of Q1 2026.

Based on Janus Henderson Group's 13F filing for Q1 2026, filed 15 May 2026.