Question 1

How many shares of WDC does CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM own?

Accepted Answer

As of 2026-Q2, CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM holds 529,792 shares of WDC (WESTERN DIGITAL CORP).

Question 2

What is CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM's WDC position worth?

Accepted Answer

As of 2026-Q2, CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM's WDC position is worth $338.4M.

Question 3

Is CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM buying or selling WDC?

Accepted Answer

In 2026-Q2, CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM increased their WDC position (+1.0% change in shares).

Question 4

When did CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM first buy WDC?

Accepted Answer

Based on available 13F filings, CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM first reported a position in WDC in 2018-Q4. They have held the position across 31 quarters.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Increased	529,792	+1.0%	$338.4M	0.3%	$638.52	37
2026-Q1	Decreased	524,436	-3.7%	$141.9M	0.2%	$270.33	0
2025-Q4	Increased	544,524	+5.8%	$93.8M	0.1%	$172.09	32
2025-Q3	Increased	514,643	+5.2%	$61.8M	0.1%	$119.84	31
2025-Q2	Decreased	489,216	-1.3%	$31.3M	0.0%	$63.80	0
2025-Q1	Increased	495,736	+0.6%	$20M	0.0%	$40.23	28
2024-Q4	Decreased	492,846	-2.0%	$29.4M	0.0%	$44.85	0
2024-Q3	Decreased	502,893	-1.0%	$34.3M	0.0%	$51.37	0
2024-Q2	Increased	508,153	+3.9%	$38.5M	0.0%	$56.99	30
2024-Q1	Decreased	489,036	-0.9%	$33.4M	0.0%	$51.33	0
2023-Q4	Decreased	493,491	-1.8%	$25.8M	0.0%	$39.39	0
2023-Q3	Decreased	502,285	-3.3%	$22.9M	0.0%	$34.32	0
2023-Q2	Decreased	519,398	-1.0%	$19.7M	0.0%	$28.53	0
2023-Q1	Decreased	524,723	-0.2%	$19.8M	0.0%	$28.33	0
2022-Q4	Increased	525,942	+1.1%	$16.6M	0.0%	$23.73	28
2022-Q3	Decreased	520,456	-5.1%	$16.9M	0.0%	$24.48	0
2022-Q2	Increased	548,412	+0.4%	$24.6M	0.0%	$33.72	29
2022-Q1	Decreased	546,046	-4.8%	$27.1M	0.0%	$37.35	0
2021-Q4	Increased	573,828	+2.5%	$37.4M	0.0%	$49.05	30
2021-Q3	Increased	559,889	+2.7%	$31.6M	0.0%	$42.45	30
2021-Q2	Decreased	545,055	-2.9%	$38.8M	0.0%	$53.53	0
2021-Q1	Increased	561,107	+1.1%	$37.5M	0.0%	$50.21	29
2020-Q4	Decreased	555,258	-0.1%	$30.8M	0.0%	$41.66	0
2020-Q3	Increased	555,629	+2.4%	$20.3M	0.0%	$27.49	29
2020-Q2	Increased	542,847	+2.4%	$24M	0.0%	$33.21	29
2020-Q1	Increased	530,037	+6.9%	$22.1M	0.0%	$30.90	31
2019-Q4	Decreased	495,715	-1.5%	$31.5M	0.1%	$46.75	0
2019-Q3	Increased	503,383	+0.6%	$30M	0.1%	$43.54	29
2019-Q2	Increased	500,610	+2.0%	$23.8M	0.0%	$34.72	29
2019-Q1	Decreased	490,778	-1.7%	$23.6M	0.0%	$34.69	0
2018-Q4	New	499,215	-	$18.5M	0.0%	$26.39	39

WDC31 quarters

WDC
31 quarters