Question 1

How many shares of PDFS does CHARLES SCHWAB INVESTMENT MANAGEMENT INC own?

Accepted Answer

As of 2026-Q2, CHARLES SCHWAB INVESTMENT MANAGEMENT INC holds 367,090 shares of PDFS (PDF SOLUTIONS INC).

Question 2

What is CHARLES SCHWAB INVESTMENT MANAGEMENT INC's PDFS position worth?

Accepted Answer

As of 2026-Q2, CHARLES SCHWAB INVESTMENT MANAGEMENT INC's PDFS position is worth $26M.

Question 3

Is CHARLES SCHWAB INVESTMENT MANAGEMENT INC buying or selling PDFS?

Accepted Answer

In 2026-Q2, CHARLES SCHWAB INVESTMENT MANAGEMENT INC increased their PDFS position (+19.1% change in shares).

Question 4

When did CHARLES SCHWAB INVESTMENT MANAGEMENT INC first buy PDFS?

Accepted Answer

Based on available 13F filings, CHARLES SCHWAB INVESTMENT MANAGEMENT INC first reported a position in PDFS in 2018-Q4. They have held the position across 31 quarters.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Increased	367,090	+19.1%	$26M	0.0%	$70.79	34
2026-Q1	Increased	308,174	+0.4%	$10.1M	0.0%	$32.75	28
2025-Q4	Increased	306,825	+2.8%	$8.8M	0.0%	$29.65	28
2025-Q3	Increased	298,547	+3.5%	$7.7M	0.0%	$26.10	28
2025-Q2	Increased	288,532	+2.0%	$6.2M	0.0%	$21.15	28
2025-Q1	Increased	282,752	+4.4%	$5.4M	0.0%	$19.28	28
2024-Q4	Increased	270,832	+2.4%	$7.3M	0.0%	$27.50	28
2024-Q3	Increased	264,586	+0.0%	$8.4M	0.0%	$31.81	27
2024-Q2	Increased	264,543	+1.9%	$9.6M	0.0%	$36.38	28
2024-Q1	Increased	259,595	+4.7%	$8.7M	0.0%	$33.67	29
2023-Q4	Increased	247,961	+2.9%	$8M	0.0%	$32.14	28
2023-Q3	Increased	240,962	+5.1%	$7.8M	0.0%	$32.40	29
2023-Q2	Increased	229,357	+2.6%	$10.3M	0.0%	$45.24	28
2023-Q1	Increased	223,486	+0.2%	$9.5M	0.0%	$41.73	28
2022-Q4	Increased	223,035	+2.6%	$6.4M	0.0%	$28.52	28
2022-Q3	Increased	217,295	+2.0%	$5.3M	0.0%	$24.84	28
2022-Q2	Decreased	213,041	-2.1%	$4.6M	0.0%	$20.62	0
2022-Q1	Increased	217,705	+2.3%	$6.1M	0.0%	$28.45	28
2021-Q4	Increased	212,906	+4.4%	$6.8M	0.0%	$32.03	29
2021-Q3	Increased	203,902	+1.0%	$4.7M	0.0%	$22.96	27
2021-Q2	Increased	201,954	+3.9%	$3.7M	0.0%	$18.33	28
2021-Q1	Increased	194,321	+2.3%	$3.5M	0.0%	$17.34	27
2020-Q4	Increased	189,878	+0.4%	$4.1M	0.0%	$21.67	27
2020-Q3	Increased	189,083	+0.7%	$3.5M	0.0%	$19.42	27
2020-Q2	Increased	187,751	+7.8%	$3.7M	0.0%	$19.16	29
2020-Q1	Increased	174,152	+1.6%	$2M	0.0%	$11.70	26
2019-Q4	Increased	171,400	+2.5%	$2.9M	0.0%	$16.92	27
2019-Q3	Increased	167,291	+2.4%	$2.2M	0.0%	$13.14	27
2019-Q2	Increased	163,436	+4.2%	$2.1M	0.0%	$13.12	27
2019-Q1	Increased	156,897	+3.0%	$1.9M	0.0%	$12.35	27
2018-Q4	New	152,402	-	$1.3M	0.0%	$8.30	35

PDFS31 quarters

PDFS
31 quarters