Adage Capital Partners’s KLA KLAC Stock Holding History

Adage Capital Partners’s Portfolio KLAC Stock Details KLAC Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$140M	Sell	949,540 -99,000	-9%	-$14.5M	0.22%	91
2025 Q4	$127M	Buy	1,048,540 +150,000	+17%	+$17.6M	0.19%	99
2025 Q3	$96.9M	Sell	898,540 -116,000	-11%	-$10.8M	0.15%	128
2025 Q2	$90.9M	Sell	1,014,540 -2,000	-0.2%	-$150K	0.15%	130
2025 Q1	$69.1M	Sell	1,016,540 -32,000	-3%	-$2.31M	0.13%	156
2024 Q4	$66.1M	Buy	1,048,540 +181,840	+21%	+$12.3M	0.12%	174
2024 Q3	$67.1M	Sell	866,700 -425,000	-33%	-$33.3M	0.12%	183
2024 Q2	$107M	Buy	1,291,700 +260,000	+25%	+$19.2M	0.2%	104
2024 Q1	$72.1M	Buy	1,031,700 +346,000	+50%	+$22.2M	0.14%	157
2023 Q4	$39.9M	Sell	685,700 -464,000	-40%	-$24.2M	0.08%	248
2023 Q3	$52.7M	Sell	1,149,700 -107,000	-9%	-$5.13M	0.12%	183
2023 Q2	$61M	Sell	1,256,700 -20,000	-2%	-$836K	0.13%	171
2023 Q1	$51M	Buy	1,276,700 +95,000	+8%	+$3.74M	0.11%	211
2022 Q4	$44.6M	Sell	1,181,700 -3,000	-0.3%	-$105K	0.11%	230
2022 Q3	$35.9M	Sell	1,184,700 -135,000	-10%	-$4.68M	0.09%	248
2022 Q2	$42.1M	Sell	1,319,700 -169,000	-11%	-$5.68M	0.1%	221
2022 Q1	$54.5M	Buy	1,488,700 +58,000	+4%	+$2.17M	0.1%	194
2021 Q4	$61.5M	Sell	1,430,700 -80,000	-5%	-$3.09M	0.11%	187
2021 Q3	$50.5M	Sell	1,510,700 -72,000	-5%	-$2.4M	0.1%	211
2021 Q2	$51.3M	Buy	1,582,700 +50,000	+3%	+$1.6M	0.1%	209
2021 Q1	$50.6M	Sell	1,532,700 -100,000	-6%	-$3.01M	0.1%	205
2020 Q4	$42.3M	Sell	1,632,700 -33,000	-2%	-$769K	0.09%	233
2020 Q3	$32.3M	Sell	1,665,700 -378,000	-18%	-$7.47M	0.08%	260
2020 Q2	$39.7M	Sell	2,043,700 -3,419,860	-63%	-$58.5M	0.1%	227
2020 Q1	$78.5M	Buy	5,463,560 +2,848,420	+109%	+$45.9M	0.23%	108
2019 Q4	$46.6M	Sell	2,615,140 -1,122,000	-30%	-$18.8M	0.11%	218
2019 Q3	$59.6M	Sell	3,737,140 -1,317,000	-26%	-$18.4M	0.15%	170
2019 Q2	$59.7M	Buy	5,054,140 +2,315,140	+85%	+$26.8M	0.15%	180
2019 Q1	$32.7M	Buy	2,739,000 +2,121,800	+344%	+$22.8M	0.08%	277
2018 Q4	$5.52M	Sell	617,200 -239,000	-28%	-$2.23M	0.02%	595
2018 Q3	$8.71M	Buy	856,200 +37,000	+5%	+$404K	0.02%	565
2018 Q2	$8.4M	Sell	819,200 -725,800	-47%	-$7.89M	0.02%	590
2018 Q1	$16.8M	Buy	1,545,000 +187,000	+14%	+$2.08M	0.04%	437
2017 Q4	$14.3M	Sell	1,358,000 -109,000	-7%	-$1.15M	0.03%	502
2017 Q3	$15.6M	Sell	1,467,000 -323,000	-18%	-$3.08M	0.04%	471
2017 Q2	$16.4M	Sell	1,790,000 -1,447,000	-45%	-$14.4M	0.04%	456
2017 Q1	$30.8M	Buy	3,237,000 +218,000	+7%	+$1.92M	0.08%	314
2016 Q4	$23.8M	Sell	3,019,000 -8,254,520	-73%	-$63M	0.06%	332
2016 Q3	$78.6M	Sell	11,273,520 -1,129,000	-9%	-$8.13M	0.22%	127
2016 Q2	$90.8M	Buy	12,402,520 +1,033,000	+9%	+$7.41M	0.25%	114
2016 Q1	$82.8M	Sell	11,369,520 -997,000	-8%	-$6.71M	0.22%	126
2015 Q4	$85.8M	Buy	+12,366,520	New	+$79.1M	0.22%	130
2015 Q3	–	Sell	-1,229,000	Closed	-$6.91M	–	737
2015 Q2	$6.91M	Sell	1,229,000 -1,278,000	-51%	-$7.47M	0.02%	600
2015 Q1	$14.6M	Buy	2,507,000 +27,000	+1%	+$173K	0.04%	480
2014 Q4	$17.4M	Sell	2,480,000 -2,557,000	-51%	-$18.9M	0.04%	432
2014 Q3	$39.7M	Sell	5,037,000 -1,342,000	-21%	-$10.1M	0.1%	257
2014 Q2	$46.3M	Sell	6,379,000 -2,000	-0%	-$13.3K	0.12%	227
2014 Q1	$44.1M	Buy	6,381,000 +1,367,000	+27%	+$8.84M	0.12%	223
2013 Q4	$32.3M	Buy	5,014,000 +2,518,000	+101%	+$15.9M	0.09%	296
2013 Q3	$15.2M	Buy	2,496,000 +1,908,000	+324%	+$11.2M	0.04%	425
2013 Q2	$3.28M	Buy	+588,000	New	+$3.21M	0.01%	620

Other funds holding KLAC

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Capital World Investors Los Angeles, California $733B AUM 35.63% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Capital International Investors Los Angeles, California $427B AUM 29.17% 1-Year Est. Return

Primecap Management Pasadena, California $127B AUM 44.11% 1-Year Est. Return

Adage Capital Partners's KLAC Position: Q1 2026 in Review

Adage Capital Partners reduced its KLA (KLAC) stake by 9.4% in Q1 2026, selling an estimated $14.5M and leaving 949,540 shares worth $140M. The position accounts for 0.22% of the portfolio, ranked #91.

Adage Capital Partners first reported a position in KLAC in Q2 2013 and has held it in 51 quarters since. 2,063 funds tracked by Wall St. Rank hold KLAC as of Q1 2026.

Adage Capital Partners held 949,540 shares of KLA worth $140M as of Q1 2026.
Adage Capital Partners sold 99,000 KLA shares in Q1 2026, an estimated $14.5M.
KLA made up 0.22% of Adage Capital Partners's portfolio in Q1 2026, its #91 holding.
Adage Capital Partners first reported a position in KLA in Q2 2013 and has held it in 51 quarters since.
2,063 funds tracked by Wall St. Rank held KLA as of Q1 2026.

Based on Adage Capital Partners's 13F filing for Q1 2026, filed 15 May 2026.