Do BOAT and SEA hold the same stocks?

By their latest filings, 36% of their books are the same securities at the same weight, which is a meaningful overlap. Overlap is the sum of the smaller weight of every security they share.

Which is more different from the S&P 500, BOAT or SEA?

BOAT has 0% of its weight in S&P 500 names and SEA has 9%, so BOAT differs more from the index.

Which is cheaper, BOAT or SEA?

BOAT charges 0.69% a year and SEA charges 0.60%, so SEA is cheaper. Fees come from each fund's prospectus.

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BOAT vs SEA: which is really different?

BOAT and SEA hold 36% of their weight in the same names, and BOAT returned +78.0% over the year. SonicShares Global Shipping ETF and U.S. Global Sea to Sky Cargo ETF.

0.0%

BOAT in the S&P 500

9.2%

SEA in the S&P 500

+78.0%

BOAT total return, 1 year

+51.8%

SEA total return, 1 year

BOAT · 1 year to Sep 30, 2026100% of its weight is outside the S&P 500

0% of BOAT's weight is in S&P 500 companies and 100% is outside the index

SEA · 1 year to Sep 30, 202691% of its weight is outside the S&P 500

9% of SEA's weight is in S&P 500 companies and 91% is outside the index

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

BOAT 92

SEA 74.4

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, BOAT and SEA hold 36% 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 Jun 30, 2026.

50%

half

36% in common

Positions both hold, largest shared weight first

Holding BOAT SEA

SITC International Holdings Co 4.84% 4.95%

OOIL 4.81% 5.03%

International Seaways Inc 4.16% 4.96%

Wallenius Wilhelmsen ASA 4.14% 5.00%

COSCO SHIPPING Holdings Co Ltd 3.94% 4.99%

Scorpio Tankers Inc 3.93% 3.82%

Hafnia Ltd 3.80% 1.94%

Hoegh Autoliners ASA 1.87% 3.88%

DHT Holdings Inc 1.79% 5.22%

Danaos Corp 1.49% 2.00%

Teekay Tankers Ltd 1.31% 1.90%

Global Ship Lease Inc 0.91% 4.11%

Only in BOAT

Frontline PLC 5.43%

HMM Co Ltd 5.05%

Kawasaki Kisen Kaisha Ltd 5.04%

Mitsui OSK Lines Ltd 4.94%

AP Moller - Maersk A/S 4.57%

Matson Inc 4.38%

Hapag-Lloyd AG 3.94%

CMB Tech NV 3.41%

Only in SEA

Kuehne + Nagel International A 4.21%

Wan Hai Lines Ltd 3.98%

BW LPG Ltd 3.45%

Brambles Ltd 3.33%

Deutsche Post AG 3.21%

J&T Global Express Ltd 3.18%

ZTO Express Cayman Inc 3.17%

United Parcel Service Inc 3.15%

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

36% 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	BOAT	SEA	BOAT	SEA	BOAT	SEA
3 months	+37.6%	+23.6%	+35.0 pts	+21.0 pts	+35.4 pts	+21.4 pts
6 months	+31.3%	+18.6%	+14.3 pts	+1.6 pts	+4.5 pts	−8.3 pts
1 year	+78.0%	+51.8%	+62.3 pts	+36.1 pts	+54.2 pts	+28.0 pts
3 years	+143.1%	+86.4%	+58.1 pts	+1.4 pts	+33.1 pts	−23.6 pts
Since launch BOAT Aug 2021 · SEA Jan 2022	+261.6%	+66.9%	+175.2 pts	−15.0 pts	+153.9 pts	−43.5 pts

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

On the same fields

BOAT

SonicShares Global Shipping ETF · Holds 51 stocks in shipping, aviation and logistics, 0% of its weight in S&P 500 companies

SEA

U.S. Global Sea to Sky Cargo ETF · Holds 29 stocks in shipping, aviation and logistics, 9% of its weight in S&P 500 companies

Issuer SonicShares U.S. Global

Theme Shipping, aviation and logistics Shipping, aviation and logistics

In the S&P 500 0.0% 9.2%

Active share vs the S&P 500 100.0% 99.7%

In the Nasdaq-100 0.0% 0.0%

Holdings 51 29

Top ten, share of the fund 47.4% 46.3%

Expense ratio 0.69% 0.60%

Fee for the differing part 0.69% 0.60%

Total return, 1 year +78.0% +51.8%

vs the S&P 500 +62.3 pts +36.1 pts

vs the Nasdaq-100 +54.2 pts +28.0 pts

Below its high −2.9% −2.5%

Net assets $67m $18m

BOAT and SEA on the same fields, as of Sep 30, 2026. Source: ETFIQ.

BOAT in plain words

By weight, 0% of BOAT'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 47% of the fund across 51 positions, as filed for Jun 30, 2026. Over the year to Sep 30, 2026 the fund returned +78.0% with distributions reinvested against +15.7% for the S&P 500, so a holder was ahead by 62.2 pts.

SEA in plain words

By weight, 9% of SEA'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 46% of the fund across 29 positions, as filed for Jun 30, 2026. Over the year to Sep 30, 2026 the fund returned +51.8% with distributions reinvested against +15.7% for the S&P 500, so a holder was ahead by 36.1 pts.

Questions people ask

Do BOAT and SEA hold the same stocks?: By their latest filings, 36% of their books are the same securities at the same weight, which is a meaningful overlap. Overlap is the sum of the smaller weight of every security they share.
Which is more different from the S&P 500, BOAT or SEA?: BOAT has 0% of its weight in S&P 500 names and SEA has 9%, so BOAT differs more from the index.
Which is cheaper, BOAT or SEA?: BOAT charges 0.69% a year and SEA charges 0.60%, so SEA is cheaper. Fees come from each fund's prospectus.

Other comparisons

BOAT vs DOCK BOAT vs HULL BOAT vs JETS BOAT vs SHPP SEA vs SHPP SEA vs DOCK SEA vs HULL SEA vs JETS

BOAT on its own →SEA on its own →How every figure is computed →Standards and sources →

Where these figures came from

BOAT filings on SEC EDGAR ↗BOAT prospectus with the expense ratio (SEC) ↗SonicShares website ↗SEA filings on SEC EDGAR ↗SEA prospectus with the expense ratio (SEC) ↗U.S. Global website ↗

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, BOAT against SEA, data as of Sep 30, 2026. https://etfiq.com/compare/themes/boat-vs-sea

Open data

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