California State Teachers Retirement System (CalSTRS)
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California State Teachers Retirement System (CalSTRS)’s Kosmos Energy KOS Stock Holding History

California State Teachers Retirement System (CalSTRS)’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 		$1.85M Buy
663,917
+227,978
+52% +$429K ﹤0.01% 1563
2025
Q4 		$396K Sell
435,939
-451
-0.1% -$595 ﹤0.01% 2168
2025
Q3 		$724K Buy
436,390
+22
+0% +$41 ﹤0.01% 1925
2025
Q2 		$751K Sell
436,368
-4,618
-1% -$8.36K ﹤0.01% 1882
2025
Q1 		$1.01M Hold
440,986
– – ﹤0.01% 1698
2024
Q4 		$1.51M Sell
440,986
-4,897
-1% -$18.6K ﹤0.01% 1540
2024
Q3 		$1.8M Sell
445,883
-13,769
-3% -$67.1K ﹤0.01% 1458
2024
Q2 		$2.55M Buy
459,652
+21
+0% +$122 ﹤0.01% 1239
2024
Q1 		$2.74M Sell
459,631
-25,339
-5% -$152K ﹤0.01% 1221
2023
Q4 		$3.25M Sell
484,970
-22,581
-4% -$158K ﹤0.01% 1152
2023
Q3 		$4.15M Sell
507,551
-48,817
-9% -$346K 0.01% 976
2023
Q2 		$3.33M Sell
556,368
-12,141
-2% -$79.1K ﹤0.01% 1190
2023
Q1 		$4.23M Sell
568,509
-8,392
-1% -$61.5K 0.01% 1042
2022
Q4 		$3.67M Buy
576,901
+6,693
+1% +$41.8K 0.01% 1117
2022
Q3 		$2.95M Sell
570,208
-10,898
-2% -$66K 0.01% 1208
2022
Q2 		$3.6M Buy
581,106
+4,579
+0.8% +$33K 0.01% 1152
2022
Q1 		$4.14M Sell
576,527
-12,834
-2% -$65.4K 0.01% 1169
2021
Q4 		$2.04M Buy
589,361
+37,469
+7% +$134K ﹤0.01% 1728
2021
Q3 		$1.63M Sell
551,892
-6,103
-1% -$14.9K ﹤0.01% 1842
2021
Q2 		$1.93M Sell
557,995
-49,943
-8% -$155K ﹤0.01% 1798
2021
Q1 		$1.87M Sell
607,938
-21
-0% -$61 ﹤0.01% 1777
2020
Q4 		$1.43M Hold
607,959
– – ﹤0.01% 1819
2020
Q3 		$593K Buy
607,959
+96
+0% +$141 ﹤0.01% 2177
2020
Q2 		$1.01M Buy
607,863
+8,717
+1% +$14K ﹤0.01% 1849
2020
Q1 		$537K Buy
599,146
+39,090
+7% +$155K ﹤0.01% 2025
2019
Q4 		$3.19M Sell
560,056
-16,671
-3% -$101K 0.01% 1284
2019
Q3 		$3.6M Buy
576,727
+1,560
+0.3% +$9.58K 0.01% 1178
2019
Q2 		$3.61M Buy
575,167
+172,306
+43% +$1.1M 0.01% 1192
2019
Q1 		$2.51M Buy
402,861
+20,874
+5% +$116K 0.01% 1377
2018
Q4 		$1.55M Buy
381,987
+25
+0% +$154 ﹤0.01% 1634
2018
Q3 		$3.57M Sell
381,962
-1,046
-0.3% -$8.83K 0.01% 1237
2018
Q2 		$3.17M Buy
383,008
+7,336
+2% +$53.6K 0.01% 1301
2018
Q1 		$2.37M Sell
375,672
-12,179
-3% -$76.3K 0.01% 1417
2017
Q4 		$2.66M Buy
387,851
+2,268
+0.6% +$17.3K 0.01% 1391
2017
Q3 		$3.07M Buy
385,583
+34,492
+10% +$238K 0.01% 1305
2017
Q2 		$2.25M Buy
351,091
+29,824
+9% +$189K ﹤0.01% 1534
2017
Q1 		$2.14M Sell
321,267
-14,400
-4% -$90.6K ﹤0.01% 1585
2016
Q4 		$2.35M Sell
335,667
-8,600
-2% -$48.9K ﹤0.01% 1555
2016
Q3 		$2.21M Buy
344,267
+3,200
+0.9% +$18.7K ﹤0.01% 1586
2016
Q2 		$1.86M Sell
341,067
-3,289
-1% -$18.6K ﹤0.01% 1668
2016
Q1 		$2M Buy
344,356
+42,895
+14% +$203K ﹤0.01% 1605
2015
Q4 		$1.57M Buy
301,461
+4,742
+2% +$31.5K ﹤0.01% 1716
2015
Q3 		$1.66M Buy
296,719
+8,788
+3% +$60.9K ﹤0.01% 1662
2015
Q2 		$2.43M Buy
287,931
+94,405
+49% +$840K 0.01% 1521
2015
Q1 		$1.53M Sell
193,526
-2,400
-1% -$20.1K ﹤0.01% 1764
2014
Q4 		$1.64M Buy
195,926
+834
+0.4% +$7.44K ﹤0.01% 1725
2014
Q3 		$1.94M Buy
195,092
+2,207
+1% +$22.1K ﹤0.01% 1584
2014
Q2 		$2.17M Buy
192,885
+9,200
+5% +$98.3K 0.01% 1552
2014
Q1 		$2.02M Buy
183,685
+700
+0.4% +$7.51K 0.01% 1540
2013
Q4 		$2.05M Buy
182,985
+1,200
+0.7% +$12.8K 0.01% 1498
2013
Q3 		$1.87M Buy
181,785
+5,640
+3% +$59.1K 0.01% 1515
2013
Q2 		$1.79M Buy
+176,145
New +$1.91M 0.01% 1471

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

California State Teachers Retirement System (CalSTRS)'s KOS Position: Q1 2026 in Review

California State Teachers Retirement System (CalSTRS) increased its Kosmos Energy (KOS) stake by 52% in Q1 2026, buying an estimated $429K and bringing the position to 663,917 shares worth $1.85M. The position accounts for ﹤0.01% of the portfolio, ranked #1563.

California State Teachers Retirement System (CalSTRS) first reported a position in KOS in Q2 2013 and has held it in 52 quarters since. The position peaked at $4.23M in Q1 2023. 262 funds tracked by Wall St. Rank hold KOS as of Q1 2026.

  • California State Teachers Retirement System (CalSTRS) held 663,917 shares of Kosmos Energy worth $1.85M as of Q1 2026.
  • California State Teachers Retirement System (CalSTRS) bought 227,978 Kosmos Energy shares in Q1 2026, an estimated $429K.
  • Kosmos Energy made up ﹤0.01% of California State Teachers Retirement System (CalSTRS)'s portfolio in Q1 2026, its #1563 holding.
  • California State Teachers Retirement System (CalSTRS) first reported a position in Kosmos Energy in Q2 2013 and has held it in 52 quarters since.
  • California State Teachers Retirement System (CalSTRS)'s Kosmos Energy position peaked at $4.23M in Q1 2023.
  • 262 funds tracked by Wall St. Rank held Kosmos Energy as of Q1 2026.

Based on California State Teachers Retirement System (CalSTRS)'s 13F filing for Q1 2026, filed 18 May 2026.