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	$736K	Buy	+5,000	New	+$732K	﹤0.01%	990
2025 Q3	–	Sell	-17,000	Closed	-$1.52M	–	1726
2025 Q2	$1.52M	Sell	17,000 -19,000	-53%	-$1.43M	﹤0.01%	959
2025 Q1	$2.45M	Sell	36,000 -39,000	-52%	-$2.81M	0.01%	818
2024 Q4	$4.73M	Sell	75,000 -38,000	-34%	-$2.57M	0.01%	843
2024 Q3	$8.75M	Buy	+113,000	New	+$8.87M	0.02%	599
2024 Q1	–	Sell	-524,000	Closed	-$30.5M	–	2103
2023 Q4	$30.5M	Buy	524,000 +483,000	+1,178%	+$25.1M	0.06%	283
2023 Q3	$1.88M	Buy	41,000 +16,000	+64%	+$767K	﹤0.01%	1119
2023 Q2	$1.21M	Sell	25,000 -103,000	-80%	-$4.3M	﹤0.01%	1332
2023 Q1	$5.11M	Sell	128,000 -1,042,000	-89%	-$41.1M	0.01%	851
2022 Q4	$44.1M	Buy	1,170,000 +463,000	+65%	+$16.1M	0.07%	300
2022 Q3	$21.4M	Buy	707,000 +502,000	+245%	+$17.4M	0.03%	504
2022 Q2	$6.54M	Sell	205,000 -358,000	-64%	-$12M	0.01%	872
2022 Q1	$20.6M	Buy	563,000 +54,000	+11%	+$2.02M	0.01%	492
2021 Q4	$21.9M	Sell	509,000 -52,000	-9%	-$2.01M	0.03%	389
2021 Q3	$18.8M	Buy	561,000 +425,000	+313%	+$14.2M	0.02%	465
2021 Q2	$4.41M	Buy	+136,000	New	+$4.36M	0.01%	699
2021 Q1	–	Sell	-396,000	Closed	-$10.3M	–	1726
2020 Q4	$10.3M	Sell	396,000 -1,441,000	-78%	-$33.6M	0.01%	715
2020 Q3	$35.6M	Buy	1,837,000 +1,174,000	+177%	+$23.2M	0.03%	512
2020 Q2	$12.9M	Buy	663,000 +537,000	+426%	+$9.18M	0.02%	672
2020 Q1	$1.81M	Buy	126,000 +1,000	+0.8%	+$16.1K	﹤0.01%	1274
2019 Q4	$2.23M	Sell	125,000 -1,443,000	-92%	-$24.2M	﹤0.01%	1215
2019 Q3	$25M	Buy	+1,568,000	New	+$21.9M	0.03%	335
2015 Q4	–	Sell	-11,000	Closed	-$55K	–	3466
2015 Q3	$55K	Buy	11,000 +10,000	+1,000%	+$51.4K	﹤0.01%	2145
2015 Q2	$6K	Sell	1,000 -44,000	-98%	-$257K	﹤0.01%	3278
2015 Q1	$261K	Sell	45,000 -203,000	-82%	-$1.3M	﹤0.01%	1923
2014 Q4	$1.74M	Sell	248,000 -348,000	-58%	-$2.57M	0.01%	1155
2014 Q3	$4.7M	Buy	596,000 +536,000	+893%	+$4.04M	0.01%	743
2014 Q2	$435K	Buy	60,000 +21,000	+54%	+$139K	﹤0.01%	1471
2014 Q1	$270K	Buy	39,000 +23,000	+144%	+$149K	﹤0.01%	1303
2013 Q4	$103K	Sell	16,000 -13,000	-45%	-$82K	﹤0.01%	1821
2013 Q3	$176K	Buy	29,000 +28,000	+2,800%	+$164K	﹤0.01%	1167
2013 Q2	$6K	Buy	+1,000	New	+$5.46K	﹤0.01%	2374

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.