Do ARKX and NASA hold the same stocks?

By their latest filings, 15% 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, ARKX or NASA?

ARKX has 51% of its weight in S&P 500 names and NASA has 3%, so NASA differs more from the index.

Which is cheaper, ARKX or NASA?

ARKX charges 0.75% a year and NASA charges 0.75%, so ARKX is cheaper. Fees come from each fund's prospectus.

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ARKX vs NASA: which is really different?

ARKX and NASA hold 15% of their weight in the same names. ARK Space & Defense Innovation ETF and Tema Space Innovators ETF.

51.4%

ARKX in the S&P 500

2.6%

NASA in the S&P 500

+11.7%

ARKX total return, 1 year

−4.8%

NASA total return, since launch

ARKX · 1 year to Sep 30, 202649% of its weight is outside the S&P 500

51% of ARKX's weight is in S&P 500 companies and 49% is outside the index

NASA · 6 months to Sep 30, 202697% of its weight is outside the S&P 500

3% of NASA's weight is in S&P 500 companies and 97% is outside the index

ETFIQ Off-Index Score · NASA scores higherHow much of it is not the index it is sold as an alternative to?

ARKX 15.9

NASA 82.3

0.1, the lowest in this set92.0, the highest

A percentile among the 375 thematic ETFs with a holdings filing. It is a position in a set, not a rating, and neither end of it is a recommendation. All thematic ETFs ranked by it → How it is computed →

What they hold in common

By the books each fund has filed, ARKX and NASA hold 15% of their money in the same securities at the same weight. Above 50%, holding both is close to holding one of them twice. Holdings dated Oct 1, 2026 and Sep 30, 2026.

50%

half

15% in common

Positions both hold, largest shared weight first

Holding ARKX NASA

SPACE EXPLORATION TECHN-CL A 10.84% 7.46%

ROCKET LAB 5.86% 10.35%

INTUITIVE MACHINES INC 1.91% 3.44%

Only in ARKX

L3HARRIS TECHNOLOGIES INC 6.17%

DEERE & CO 5.60%

KRATOS DEFENSE & SECURITY 5.49%

NVIDIA CORP 5.37%

AEROVIRONMENT INC 4.61%

ADVANCED MICRO DEVICES 4.52%

AMAZON.COM INC 4.48%

TERADYNE INC 4.14%

Only in NASA

SPACEX SPV EXPOSURE 16.75%

AST SPACEMOBILE INC 6.94%

VIASAT INC 5.19%

UNIVERSAL MICROWAVE TECHNOLOGY INC 4.88%

FILTRONIC PLC 3.89%

FIREFLY AEROSPACE INC 3.81%

5N PLUS INC 3.38%

VOYAGER TECHNOLOGIES INC 3.11%

Weight overlap is an ETFIQ calculation: for every security both funds hold, the smaller of the two weights, summed.

15% of the two portfolios are the same securities at the same weight.

Performance, window by window

	Total return		vs the S&P 500		vs the Nasdaq-100
Window	ARKX	NASA	ARKX	NASA	ARKX	NASA
3 months	−5.7%	−18.6%	−8.2 pts	−21.2 pts	−7.8 pts	−20.8 pts
6 months	+6.7%	−9.3%	−10.3 pts	−26.3 pts	−20.2 pts	−36.1 pts
1 year	+11.7%	not published	−4.0 pts	not published	−12.1 pts	not published
3 years	+131.5%	not published	+46.5 pts	not published	+21.5 pts	not published
Since launch ARKX Mar 2021 · NASA Mar 2026	+57.1%	−4.8%	−50.8 pts	−22.7 pts	−85.9 pts	−33.3 pts

ARKX and NASA over each window. Every figure is an ETFIQ calculation with distributions reinvested. Source: ETFIQ. Open the live comparison on ETFIQ →

On the same fields

ARKX

ARK Space & Defense Innovation ETF · Holds 34 stocks in space, 51% of its weight in S&P 500 companies

NASA

Tema Space Innovators ETF · Holds 35 stocks in space, 3% of its weight in S&P 500 companies

Issuer ARK Tema

Theme Space Space

In the S&P 500 51.4% 2.6%

Active share vs the S&P 500 83.6% 99.9%

In the Nasdaq-100 28.4% 2.2%

Holdings 34 35

Top ten, share of the fund 57.1% 66.1%

Expense ratio 0.75% 0.75%

Fee for the differing part 0.90% 0.75%

Total return, 1 year +11.7% −4.8% (since launch on Mar 31, 2026)

vs the S&P 500 −4.0 pts −22.7 pts

vs the Nasdaq-100 −12.1 pts −33.3 pts

Below its high −15.5% −42.8%

Net assets $737m $1.1bn

ARKX and NASA on the same fields, as of Sep 30, 2026. Source: ETFIQ.

ARKX in plain words

By weight, 51% of ARKX's portfolio is stocks that are also in the S&P 500; its active share against the S&P 500 is 84%. The top ten holdings are 57% of the fund across 34 positions, as published by its issuer for Oct 1, 2026. Over the year to Sep 30, 2026 the fund returned +11.7% with distributions reinvested against +15.7% for the S&P 500, so a holder was behind by 4.0 pts. It sits 15.5% below its all-time high of May 28, 2026.

NASA in plain words

By weight, 3% 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 66% of the fund across 35 positions, as published by its issuer for Sep 30, 2026. Since it launched on Mar 31, 2026 the fund returned −4.8% with distributions reinvested against +17.9% for the S&P 500, so a holder was behind by 22.7 pts. It sits 42.8% below its all-time high of May 27, 2026.

Questions people ask

Do ARKX and NASA hold the same stocks?: By their latest filings, 15% 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, ARKX or NASA?: ARKX has 51% of its weight in S&P 500 names and NASA has 3%, so NASA differs more from the index.
Which is cheaper, ARKX or NASA?: ARKX charges 0.75% a year and NASA charges 0.75%, so ARKX is cheaper. Fees come from each fund's prospectus.

Other comparisons

ARKX vs MARS ARKX vs FSPC ARKX vs GALX ARKX vs ORBX NASA vs ORBX NASA vs UFO NASA vs WARP NASA vs DIPR

ARKX on its own →NASA on its own →How every figure is computed →Standards and sources →

Where these figures came from

ARKX filings on SEC EDGAR ↗ARKX prospectus with the expense ratio (SEC) ↗ARK page for ARKX ↗NASA filings on SEC EDGAR ↗NASA prospectus with the expense ratio (SEC) ↗Tema page for NASA ↗

ETFIQ links to the documents behind every figure. It is not affiliated with any issuer, and a link is not an endorsement. A comparison is not a recommendation.

Cite this page

ETFIQ, ARKX against NASA, data as of Sep 30, 2026. https://etfiq.com/compare/themes/arkx-vs-nasa

Open data

Free to use with attribution. Every figure is calculated from a named public source; the method is at etfiq.com/methodology.