Rocket Lab Corp (RKLB)

As of 14 August 2026, short interest in RKLB is 44,395,701 shares, down 1,452,230 shares over the last month. Over the last 48 readings it ranged from 19,569,016 shares (27 February 2026) to 63,654,443 shares (15 May 2025). At the reported average volume of 20.4M shares a day that is 2.2 days to cover.

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As of 11 September 2026, the short share of RKLB volume is 42.8%, down 0.7 points over the last five sessions. Over the last 52 readings it ranged from 32.7% (8 September 2026) to 62.5% (9 July 2026). The latest reading is 4.5 points below the 30-session average of 47.3%, on 6.9M shares reported.

As of 14 August 2026, the fails-to-deliver balance in RKLB is 27 shares, down 272,183 shares over the last settlement date. Over the last 52 readings it ranged from 1 share (5 June 2026) to 570,323 shares (27 March 2026). The latest reading sits at the bottom of that range.

Insiders at RKLB reported 46 open-market sells worth $303.4M 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: Spice Adam C. (Chief Financial Officer) on 2026-09-02.

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.

7 Form 144 notices on file for RKLB worth $17.0M at the prices reported; 7 in the last 90 days worth $17.0M. Latest: ADAM C SPICE filed on 2026-09-02 to sell 140,157 shares ($8.8M) from 2026-09-02.

1 holder above 5% has filed on RKLB, all on Schedule 13G (passive). The largest reported stake is Vanguard Capital Management at 5.2% of the class (30,080,579 shares), filed 2026-07-31 for an event on 2026-06-30.

10 of the 30 tracked managers held RKLB at their latest 13F, $1.67B in total at quarter-end prices. Citadel Advisors is the largest at $1.08B (0.1% of its portfolio) as of 2026-06-30. Over the prior quarter 4 added shares and 6 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) Rocket Lab Corp reported revenue of $234.1M, up 62.0% from the same quarter a year earlier, and net loss of $49.3M (-0.08 diluted EPS). In FY 2025 it generated -$165.5M of operating cash flow. As of 2026-06-30, cash was $2.13B against $13.1M 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 2026-08-05 from the cover page.

2 contract actions on file for RKLB: $11.9M obligated in the last 90 days and $11.9M in the last 12 months across 1 awarding agency. The largest was $6.6M from the National Aeronautics and Space Administration on 2026-09-09 (venture-class acquisition of dedicated and rideshare (vadr) umbrella task order.). Only actions large enough to reach the daily top list are counted, and agencies report with a lag.