Parallax Volatility Advisers’s KLA KLAC Stock Holding History

Parallax Volatility Advisers’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	$883K	Buy	6,000 +5,000	+500%	+$732K	﹤0.01%	948
2025 Q4	$122K	Buy	+1,000	New	+$117K	﹤0.01%	1428
2025 Q3	–	Sell	-9,000	Closed	-$806K	–	1727
2025 Q2	$806K	Sell	9,000 -158,000	-95%	-$11.9M	﹤0.01%	1105
2025 Q1	$11.4M	Sell	167,000 -132,000	-44%	-$9.51M	0.03%	426
2024 Q4	$18.8M	Buy	299,000 +91,000	+44%	+$6.15M	0.04%	361
2024 Q3	$16.1M	Buy	208,000 +133,000	+177%	+$10.4M	0.03%	385
2024 Q2	$6.18M	Sell	75,000 -166,000	-69%	-$12.3M	0.01%	644
2024 Q1	$16.8M	Sell	241,000 -115,000	-32%	-$7.39M	0.04%	360
2023 Q4	$20.7M	Sell	356,000 -26,000	-7%	-$1.35M	0.04%	384
2023 Q3	$17.5M	Buy	382,000 +241,000	+171%	+$11.6M	0.04%	368
2023 Q2	$6.84M	Sell	141,000 -42,000	-23%	-$1.75M	0.01%	662
2023 Q1	$7.3M	Sell	183,000 -1,171,000	-86%	-$46.1M	0.01%	694
2022 Q4	$51M	Buy	1,354,000 +965,000	+248%	+$33.6M	0.08%	273
2022 Q3	$11.8M	Buy	389,000 +189,000	+95%	+$6.55M	0.02%	712
2022 Q2	$6.39M	Sell	200,000 -505,000	-72%	-$17M	0.01%	883
2022 Q1	$25.8M	Sell	705,000 -394,000	-36%	-$14.7M	0.01%	425
2021 Q4	$47.3M	Sell	1,099,000 -4,000	-0.4%	-$154K	0.06%	242
2021 Q3	$36.9M	Buy	1,103,000 +182,000	+20%	+$6.08M	0.04%	313
2021 Q2	$29.9M	Buy	+921,000	New	+$29.5M	0.04%	289
2021 Q1	–	Sell	-3,002,000	Closed	-$77.7M	–	1728
2020 Q4	$77.7M	Sell	3,002,000 -2,540,000	-46%	-$59.2M	0.08%	203
2020 Q3	$107M	Buy	5,542,000 +3,570,000	+181%	+$70.5M	0.08%	216
2020 Q2	$38.4M	Buy	1,972,000 +1,105,000	+127%	+$18.9M	0.04%	328
2020 Q1	$12.5M	Buy	867,000 +128,000	+17%	+$2.06M	0.02%	534
2019 Q4	$13.2M	Sell	739,000 -880,000	-54%	-$14.8M	0.02%	561
2019 Q3	$25.8M	Buy	+1,619,000	New	+$22.6M	0.03%	326
2016 Q1	–	Sell	-5,000	Closed	-$35K	–	3164
2015 Q4	$35K	Buy	+5,000	New	+$32K	﹤0.01%	2428
2015 Q3	–	Sell	-11,000	Closed	-$62K	–	3580
2015 Q2	$62K	Sell	11,000 -81,000	-88%	-$474K	﹤0.01%	2452
2015 Q1	$535K	Sell	92,000 -237,000	-72%	-$1.52M	﹤0.01%	1518
2014 Q4	$2.31M	Sell	329,000 -1,262,000	-79%	-$9.32M	0.01%	1004
2014 Q3	$12.5M	Buy	1,591,000 +1,429,000	+882%	+$10.8M	0.04%	378
2014 Q2	$1.18M	Buy	162,000 +147,000	+980%	+$976K	﹤0.01%	981
2014 Q1	$104K	Buy	15,000 +10,000	+200%	+$64.7K	﹤0.01%	1854
2013 Q4	$32K	Sell	5,000 -1,000	-17%	-$6.31K	﹤0.01%	2467
2013 Q3	$36K	Buy	6,000 +1,000	+20%	+$5.86K	﹤0.01%	1973
2013 Q2	$28K	Buy	+5,000	New	+$27.3K	﹤0.01%	1851

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

Parallax Volatility Advisers's KLAC Position: Q1 2026 in Review

Parallax Volatility Advisers increased its KLA (KLAC) stake by 3.8% in Q1 2026, buying an estimated $71.7K and bringing the position to 13,300 shares worth $1.96M. The position accounts for 0.01% of the portfolio, ranked #790.

Parallax Volatility Advisers first reported a position in KLAC in Q2 2013 and has held it in 40 quarters since. The position peaked at $19.9M in Q3 2023. 2,063 funds tracked by Wall St. Rank hold KLAC as of Q1 2026.

Parallax Volatility Advisers held 13,300 shares of KLA worth $1.96M as of Q1 2026.
Parallax Volatility Advisers bought 490 KLA shares in Q1 2026, an estimated $71.7K.
KLA made up 0.01% of Parallax Volatility Advisers's portfolio in Q1 2026, its #790 holding.
Parallax Volatility Advisers first reported a position in KLA in Q2 2013 and has held it in 40 quarters since.
Parallax Volatility Advisers's KLA position peaked at $19.9M in Q3 2023.
2,063 funds tracked by Wall St. Rank held KLA as of Q1 2026.

Based on Parallax Volatility Advisers's 13F filing for Q1 2026, filed 15 May 2026.