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Data as of Nov 12, 2026.

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BAI vs LUMA: Holdings Overlap & Returns

Return, fees and overlap, side by side.

Return gap
+9.6 pts
3 months to Nov 12, 2026: BAI ahead, total return
Fee gap
0.45 pts
A year: BAI 0.55%, LUMA 1.00%, per filings dated Jul 8, 2026 and Aug 26, 2026
Overlap
7%
Share of the two books held in common, holdings dated Nov 11, 2026
Net flow
–
Needs daily flows for both funds

Pair scorecard

BAI costs 0.45 points a year less; BAI is far larger, $11.9bn against $10m.

Points (pts) are percentage points.

BAI vs LUMA: Holdings Overlap & Returns
MeasureBAILUMA
Return
Total return, 1 year+8.2%not published
Drawdown
Below its all-time high30.8%, high on Jun 22, 202633.8%, high on Oct 6, 2026
Against its benchmark
What it tracksArtificial intelligenceAI infrastructure and chips
Its benchmark, total return, 1 year+38.7%
Against its benchmark, 1 yearbehind by 30.5 pts
Cost and size
Expense ratio0.55%1.00%
Net assets, as of Nov 11, 2026$11.9bn$10m
Holdings
Holdings in common7%

Method

Key numbers
52.4%
BAI in the S&P 500
19.4%
LUMA in the S&P 500
+8.2%
BAI total return, 1 year
−23.5%
LUMA total return, since launch, Jul 15, 2026
BAI · 1 year to Nov 12, 2026 48% of its weight is outside the S&P 500
48% of its weight is outside the S&P 50052% of BAI's weight is in S&P 500 companies and 48% is outside the index. Holdings as of Nov 11, 2026.52%48%of its weight in S&P 500 companiesof its weight outside the S&P 500active share 78% · top ten 43% of the fund · 71 holdings as published by its issuer for Nov 11, 2026 · Nasdaq-100: 47% in48% of its weight is outside the S&P 50052% of BAI's weight is in S&P 500 companies and 48% is outside the index. Holdings as of Nov 11, 2026.52%48%in the S&P 500outsideactive share 78% · Nasdaq-100: 47% in

52% of BAI's weight is in S&P 500 companies and 48% is outside the index. Holdings as of Nov 11, 2026.

LUMA · 3 months to Nov 12, 2026 81% of its weight is outside the S&P 500
81% of its weight is outside the S&P 50019% of LUMA's weight is in S&P 500 companies and 81% is outside the index. Holdings as of Nov 11, 2026.19%81%in the S&P 500of its weight outside the S&P 500active share 99% · top ten 55% of the fund · 27 holdings as published by its issuer for Nov 11, 2026 · Nasdaq-100: 9% in81% of its weight is outside the S&P 50019% of LUMA's weight is in S&P 500 companies and 81% is outside the index. Holdings as of Nov 11, 2026.19%81%inoutside the S&P 500active share 99% · Nasdaq-100: 9% in

19% of LUMA's weight is in S&P 500 companies and 81% is outside the index. Holdings as of Nov 11, 2026.

What they share

7%

By the books each fund has filed, BAI and LUMA hold 7% of their money in the same securities at the same weight. Holdings dated Nov 11, 2026.

0 half 100%

half

7% in common

Positions both hold · largest shared weight first BAI LUMA
MARVELL TECHNOLOGY 2.28% 3.84%
LUMENTUM HOLDINGS 1.98% 4.74%
MACOM TECHNOLOGY SOLUTIONS 1.50% 5.72%
TOWER SEMICONDUCTOR 1.16% 4.61%
Only in one fund ↓
Only in BAI
ADVANCED MICRO DEVICES 6.52%
MICRON TECHNOLOGY 5.77%
TAIWAN SEMICONDUCTOR MANUFACTURING 5.37%
BROADCOM INC 5.24%
NVIDIA 4.30%
SPACE EXPLORATION TECHNOLOGIES COR 3.92%
SNOWFLAKE 3.24%
LAM RESEARCH 3.09%
Only in LUMA
AYAR LABS INC 9.61%
COHERENT CORP 5.72%
AIXTRON SE 5.65%
LAND MARK OPTOELECTRONICS 5.31%
EOPTOLINK TECHNOLOGY INC L-A 4.71%
ZHONGJI INNOLIGHT CO LTD-A 4.45%
S.O.I.T.E.C. 4.19%
NOKIA CORP-SPON ADR 4.00%
Check overlap with more funds →

Window by window

Window by window: BAI vs LUMA: Holdings Overlap & Returns
Total returnvs its benchmark
WindowBAILUMABAILUMA
3 months−19.4%−29.0%−5.9 pts vs ARTY−20.7 pts vs EEM
6 months−22.9%–−20.8 pts vs ARTY–
1 year+8.2%–−30.5 pts vs ARTY–
Since launchNot the same days: BAI Oct 2024 · LUMA Jul 2026+52.5%−23.5%−37.3 pts vs ARTY−16.7 pts vs EEM

– means no data for this window. Open this comparison in the app →

Side by side

BAI iShares A.I. Innovation and Tech Active ETF · Holds 71 stocks in artificial intelligence, 52% of its weight in S&P 500 companies LUMA KraneShares Photonic and Optical ETF · Holds 27 stocks in aI infrastructure and chips, 19% of its weight in S&P 500 companies
Issuer iShares KraneShares
Theme Artificial intelligence AI infrastructure and chips
In the S&P 500 52.4% 19.4%
Active share vs the S&P 500 77.7% 99.0%
In the Nasdaq-100 47.4% 8.6%
Holdings 71 27
Top ten, share of the fund 43.3% 54.7%
Expense ratio 0.55% 1.00%
Fee for the differing part 0.71% 1.01%
Total return, 1 year +8.2% −23.5% (since launch, Jul 15, 2026)
vs its benchmark −30.5 pts vs ARTY −16.7 pts vs EEM (since launch, Jul 15, 2026)
Below its high −30.8% −33.8%
Net assets, BAI as of Nov 12, 2026 and LUMA as of Nov 11, 2026 $11.9bn $10m

As of Nov 12, 2026. Source: ETFIQ.

7% of the two portfolios are the same securities at the same weight.

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About each fund
BAI

By weight, 52% of BAI's portfolio is stocks that are also in the S&P 500; its active share against the S&P 500 is 78%. The top ten holdings are 43% of the fund across 71 positions, as published by its issuer for Nov 11, 2026. Over the year to Nov 12, 2026 the fund returned +8.2% with distributions reinvested against +38.7% for its benchmark, the Morningstar Global Artificial Intelligence Select Index, so a holder was behind by 30.5 pts. It sits 30.8% below its all-time high of Jun 22, 2026.

LUMA

By weight, 19% of LUMA's portfolio is stocks that are also in the S&P 500; its active share against the S&P 500 is 99%. The top ten holdings are 55% of the fund across 27 positions, as published by its issuer for Nov 11, 2026. Since it first traded on Jul 15, 2026 the fund returned −23.5% with distributions reinvested. It sits 33.8% below its all-time high of Oct 6, 2026.

Questions people ask

Do BAI and LUMA hold the same stocks?
By their latest filings, 7% of their books are the same securities at the same weight. Overlap is the sum of the smaller weight of every security they share.
Which is more different from the S&P 500, BAI or LUMA?
BAI has 52% of its weight in S&P 500 names and LUMA has 19%, so LUMA differs more from the index.
Which is cheaper, BAI or LUMA?
BAI charges 0.55% a year and LUMA charges 1.00%, so BAI is cheaper. Fees come from each fund's prospectus.
Other comparisons
BAI vs IVEPBAI vs AINFBAI vs AIHYBAI vs COOLLUMA vs FAILUMA vs XAIXLUMA vs JHAILUMA vs WISE
Where to next
All thematic ETFs ranked by the S&P 500 Difference Score →How the scores are computed →BAI on its own →LUMA on its own →BAI dividend history →BAI holdings →LUMA holdings →Method →Standards and sources →
Sources and dates
BAI filings on SEC EDGAR ↗
BAI prospectus with the expense ratio (SEC) ↗
iShares page for BAI ↗
LUMA filings on SEC EDGAR ↗
LUMA prospectus with the expense ratio (SEC) ↗
KraneShares page for LUMA ↗

Links are sources, not endorsements. A comparison is not a recommendation.

How this is computed

Overlap adds up the smaller of the two weights for each security both funds hold.

Every number is an ETFIQ calculation with distributions reinvested.

Cite this pageCitation, APA and Markdown

ETFIQ, BAI against LUMA, data as of Nov 12, 2026. https://etfiq.com/compare/themes/bai-vs-luma

Open data →

Free to use with attribution for data ETFIQ computes; issuer data stays under its owner's terms.

BAI and LUMA hold 7% of their weight in the same names.

BAI on its own →LUMA on its own →
Growth of 100

BAI and LUMA

Total return, distributions reinvested, 3 months.

BAI −19.4%LUMA −29.0%
Aug 13, 2026Nov 12, 2026

BAI −19.4%, LUMA −29.0%: BAI +9.6 pts ahead, 3 months, Aug 13, 2026 to Nov 12, 2026.