KLA CORP (KLAC)

As of 31 August 2026, short interest in KLAC is 29,401,138 shares, up 2,377,135 shares over the last month. Over the last 48 readings it ranged from 2,312,762 shares (31 October 2024) to 40,762,347 shares (15 June 2026). At the reported average volume of 8.8M shares a day that is 3.4 days to cover.

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As of 11 September 2026, the short share of KLAC volume is 33.1%, up 4.5 points over the last five sessions. Over the last 52 readings it ranged from 15.8% (2 July 2026) to 60.6% (14 August 2026). The latest reading is 7.3 points below the 30-session average of 40.4%, on 2.1M shares reported.

As of 14 August 2026, the fails-to-deliver balance in KLAC is 3,834 shares, down 686 shares over the last settlement date. Over the last 52 readings it ranged from 2 shares (22 April 2026) to 519,783 shares (16 June 2026). The latest reading sits at the bottom of that range.

Insiders at KLAC reported 12 open-market sells worth $53.0M in the last 90 days and no open-market buys. Sells alone are a weak signal; insiders sell for tax, diversification and estate reasons all the time. Latest filing: Lorig Brian (EVP, KLA Global Services) on 2026-08-13.

Form 4 filings are due within two business days of the trade. Insiders sell for many reasons that say nothing about the company; open-market buys are the rarer, stronger signal.

12 Form 144 notices on file for KLAC worth $53.0M at the prices reported; 12 in the last 90 days worth $53.0M. Latest: Lorig Brian filed on 2026-08-13 to sell 59,586 shares ($12.4M) from 2026-08-13.

2 holders above 5% have filed on KLAC, all on Schedule 13G (passive). The largest reported stake is Vanguard Capital Management at 7.5% of the class (9,822,421 shares), filed 2026-04-30 for an event on 2026-03-31.

8 of the 30 tracked managers held KLAC at their latest 13F, $4.16B in total at quarter-end prices. Citadel Advisors is the largest at $2.80B (0.3% of its portfolio) as of 2026-06-30. Over the prior quarter 8 added shares and 0 cut.

Only the 30 tracked managers on the funds hub; a 13F reports long positions in US listed stock at quarter end, 45 days late, and says nothing about shorts or positions sold since.

In Q4 2026 (quarter ended 2026-06-30) KLA CORP reported revenue of $3.66B, up 15.2% from the same quarter a year earlier, and net income of $1.36B. In FY 2026 it generated $4.14B of operating cash flow and spent $2.29B on buybacks and $1.06B on dividends. As of 2026-06-30, cash was $1.65B against $5.89B of debt.

Quarterly, last 8 quarters

Fiscal years, with buybacks and dividends

Quarters are the three-month figures the company reports; a fourth quarter marked derived is the fiscal year less the three reported quarters, since companies report it only inside the 10-K. Fiscal years are the annual figures. Buybacks are cash paid to repurchase common stock in the year (XBRL PaymentsForRepurchaseOfCommonStock), not authorizations. Balance sheet lines are as of 2026-06-30; shares outstanding as of 2026-08-03 from the cover page.