CELESTICA INC (CLS)

As of 31 August 2026, short interest in CLS is 3,990,612 shares, up 728,513 shares over the last month. Over the last 48 readings it ranged from 2,187,572 shares (30 April 2026) to 5,948,533 shares (15 August 2025). At the reported average volume of 1.9M shares a day that is 2.0 days to cover.

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As of 11 September 2026, the short share of CLS volume is 39.7%, up 2.1 points over the last five sessions. Over the last 52 readings it ranged from 25.7% (16 July 2026) to 61.5% (10 July 2026). The latest reading is in line with the 30-session average of 40.1%, on 1.2M shares reported.

As of 13 August 2026, the fails-to-deliver balance in CLS is 17,772 shares, up 16,022 shares over the last settlement date. Over the last 52 readings it ranged from 1 share (30 March 2026) to 200,635 shares (29 April 2026). The latest reading sits at the bottom of that range.

Insiders at CLS reported 104 open-market sells worth $101.9M 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: MIONIS ROBERT (Chief Executive Officer) 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.

2 Form 144 notices on file for CLS worth $80.1M at the prices reported; 2 in the last 90 days worth $80.1M. Latest: MIONIS ROBERT filed on 2026-07-31 to sell 205,949 shares ($74.1M) from 2026-07-31.

3 holders above 5% have filed on CLS, all on Schedule 13G (passive). The largest reported stake is FMR LLC at 6.4% of the class (7,409,798 shares), filed 2026-02-05 for an event on 2025-12-31.

9 of the 30 tracked managers held CLS at their latest 13F, $1.87B in total at quarter-end prices. D. E. Shaw & Co. is the largest at $742.0M (0.4% of its portfolio) as of 2026-06-30. Over the prior quarter 6 added shares and 3 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 Q2 2026 (quarter ended 2026-06-30) CELESTICA INC reported revenue of $4.70B, up 62.4% from the same quarter a year earlier, and net income of $368.8M (3.17 diluted EPS). In FY 2025 it generated $659.5M of operating cash flow and spent $153.4M on buybacks.

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 2026-07-22 from the cover page.