RKLB
equityRocket Lab USA, Inc.
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Working it out…
Short interest
Shares sold short, as brokers report them to FINRA twice a month
| Settlement date | Shares short | Change | Days to cover |
|---|---|---|---|
| Sep 30, 2026 | 44.44M | +2.2% | 2.1 |
| Sep 15, 2026 | 43.48M | -4.2% | 2.4 |
| Aug 31, 2026 | 45.38M | +2.2% | 3.1 |
| Aug 14, 2026 | 44.4M | -3.1% | 2.2 |
| Jul 31, 2026 | 45.82M | -0.1% | 2.4 |
| Jul 15, 2026 | 45.85M | +7.6% | 2.4 |
| Jun 30, 2026 | 42.6M | +24.6% | 1.3 |
| Jun 15, 2026 | 34.18M | +7.9% | 1.3 |
Largest fails to deliver, the last year
92 settlement days with at least $10,000 of shares sold and not delivered
| Settlement date | Shares | Value |
|---|---|---|
| Sep 10, 2026 | 1.72M | $108.7M |
| Sep 2, 2026 | 977.13K | $61.1M |
| Jan 13, 2026 | 643.54K | $56.6M |
| Dec 17, 2025 | 861.51K | $47.8M |
| Jul 14, 2026 | 514.05K | $39.4M |
Short interest is every broker's short position at the settlement date, reported to FINRA and published about a week and a half later; it does not say who is short. Days to cover is the short position over the average day's trading, and the share of the company is against the shares outstanding on its latest filing. A fail to deliver is the balance of shares sold and not delivered by settlement, from the SEC: it can be a short seller who never borrowed the stock, but is as often a late delivery that clears within days.
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