$25.9M into Rocket Lab: ARK Invest's largest move of the day
ARKK, ARKQ and ARKX did the buying. Here are the day's other moves, and how ARK is doing against the market.
Generated from ARK's own holdings data.
ARK Invest bought roughly $25.9M of Rocket Lab (RKLB) on 23 Sep 2026, spread across ARKK and ARKQ and ARKX. No other trade that day was bigger.
Strip out the 1.1% that every holding moved as money came into the funds, and RKLB still grew 19%. That excess is what we count as a trade.
Over the last 30 days ARK has been a net buyer of Rocket Lab — $70.3M across 7 trades.
Everything ARK did on 23 Sep 2026
ARK made 8 real moves that day, once money flowing in and out of the funds is stripped out:
| Stock | Funds | Est. value |
|---|---|---|
| RKLB Rocket Lab | ARKK, ARKQ and ARKX | +$25.9M |
| GOOGL Alphabet Inc | ARKQ and ARKX | −$5.8M |
| TXG 10X Genomics Inc | ARKG | −$4.0M |
| TWST Twist Bioscience Corp | ARKG | −$3.5M |
| SCTX Scribe Therapeutics IncBought after a 11% drop this week | ARKG | +$2.5M |
| P Everpure Inc | ARKW | −$2.1M |
The bigger picture: ARK's last 30 days
Over the last 30 days ARK's biggest net buys have been Meta Platforms Inc ($73.6M), Rocket Lab ($70.3M), Nvidia Corp ($53.0M). On the other side, it has been cutting Advanced Micro Devices ($122.8M), Tempus AI Inc ($58.8M), Twist Bioscience Corp ($46.6M).
Is it working?
This year ARKK is ahead of the market — +18.0% against +14.0% for the S&P 500.
That five-year gap — 107 points — mostly comes down to timing. Five years ago ARKK was trading close to its all-time high of Feb 2021. It then fell 81% to its low in Dec 2022, and it is still 41% below that peak today. Any comparison that starts near the top of that boom looks brutal.
| To date | 1 month | YTD | 1 year | 5 years |
|---|---|---|---|---|
| ARKK | +5.8% | +18.0% | +11.2% | -21.2% |
| S&P 500 (SPY) | +0.9% | +14.0% | +18.5% | +85.8% |
| Nasdaq-100 (QQQ) | +4.8% | +21.5% | +25.9% | +105.3% |
How we work this out
ETFpeek is an independent research tool and is not affiliated with ARK Invest or Cathie Wood. Figures are estimates from public fund data, shown for information only — not financial advice. Past performance does not indicate future results.