Data as of . Every figure is the themes desk's own, on published data.
ARKK vs NASA
1% of the two portfolios are the same securities at the same weight.
What they hold in common
By the books each fund has filed, ARKK and NASA hold 1% of their money in the same securities at the same weight.
| Holding | ARKK | NASA |
|---|---|---|
| ROCKET LAB | 0.98% | 12.12% |
| Only in ARKK | Only in NASA |
|---|---|
| TESLA INC 9.62% | Planet Labs PBC 7.32% |
| SPACE EXPLORATION TECHN-CL A 6.28% | Intuitive Machines Inc 7.17% |
| CIRCLE INTERNET GROUP INC 6.06% | SpaceX SPV Exposure (Preferred) 6.47% |
| TEMPUS AI INC-CL A 5.17% | AST SpaceMobile Inc 6.19% |
| COINBASE GLOBAL INC -CLASS A 4.76% | Firefly Aerospace Inc 5.42% |
| CRISPR THERAPEUTICS AG 4.55% | BlackSky Technology Inc 4.33% |
| ROBINHOOD MARKETS INC - A 4.28% | 5N Plus Inc 4.08% |
| SHOPIFY INC - CLASS A 3.37% | Viasat Inc 4.05% |
Weight overlap is an ETFIQ calculation: for every security both funds hold, the smaller of the two weights, summed. Above 50%, holding both is close to holding one of them twice. Holdings as filed for May 31, 2026 and Sep 4, 2026.
Performance, window by window
| Window | Total return | vs the S&P 500 | vs the Nasdaq-100 | |||
|---|---|---|---|---|---|---|
| ARKK | NASA | ARKK | NASA | ARKK | NASA | |
| 3 months | +15.8% | −27.9% | +11.1 pts | −32.6 pts | +13.7 pts | −30.0 pts |
| 6 months | +19.1% | n/a | +3.9 pts | n/a | −1.1 pts | n/a |
| 1 year | +14.9% | n/a | −5.0 pts | n/a | −10.7 pts | n/a |
| 3 years | +97.5% | n/a | +19.6 pts | n/a | +4.1 pts | n/a |
| Since launch | +367.8% | −6.6% | +2.5 pts | −25.3 pts | −308.1 pts | −31.3 pts |
| ARKK ARK Innovation ETF | NASA Tema Space Innovators ETF | |
|---|---|---|
| Issuer | ARK | Tema |
| Theme | Broad innovation and megatrends | Space |
| In the S&P 500 | 37.9% | 2.4% |
| Active share vs the S&P 500 | 85.4% | 100.0% |
| In the Nasdaq-100 | 28.4% | 0.0% |
| Holdings | 47 | 37 |
| Top ten, share of the fund | 50.3% | 60.8% |
| Expense ratio | 0.75% | 0.75% |
| Fee for the differing part | 0.88% | 0.75% |
| Total return, 1 year | +14.9% | −6.6% (since launch on Mar 31, 2026) |
| vs the S&P 500 | −5.0 pts | −25.3 pts |
| vs the Nasdaq-100 | −10.7 pts | −31.3 pts |
| Below its high | −44.2% | −43.9% |
ARKK in plain words
By weight, 38% of ARKK's portfolio is stocks that are also in the S&P 500; its active share against the S&P 500 is 85%. The top ten holdings are 50% of the fund across 47 positions, as filed for Sep 4, 2026. Over the year to Sep 4, 2026 the fund returned +14.9% with distributions reinvested against +20.0% for the S&P 500, so a holder was behind by 5.0 pts. It sits 44.2% below its all-time high of Feb 12, 2021.
NASA in plain words
By weight, 2% of NASA's portfolio is stocks that are also in the S&P 500; its active share against the S&P 500 is 100%. The top ten holdings are 61% of the fund across 37 positions, as filed for May 31, 2026. Over the year to Sep 4, 2026 the fund returned −6.6% with distributions reinvested against +18.7% for the S&P 500, so a holder was behind by 25.3 pts. It sits 43.9% below its all-time high of May 27, 2026.
Questions people ask
- Do ARKK and NASA hold the same stocks?
- By their latest filings, 1% of their books are the same securities at the same weight, which is mostly different names. Overlap is the sum of the smaller weight of every security they share.
- Which is more different from the S&P 500, ARKK or NASA?
- ARKK has 38% of its weight in S&P 500 names and NASA has 2%, so NASA differs more from the index.
- Which is cheaper, ARKK or NASA?
- ARKK charges 0.75% a year and NASA charges 0.75%, so ARKK is cheaper. Fees come from each fund's prospectus.
Other comparisons
Where these figures came from
ETFIQ links to the documents behind every figure. It is not affiliated with any issuer, and a link is not an endorsement.
Cite this page. ETFIQ, ARKK against NASA, data as of Sep 4, 2026. https://etfiq.com/compare/themes/ARKK-NASA.html Free to use with attribution; the underlying files are at Open data.