DATvsSPAMETF Comparison
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ProShares Big Data Refiners ETF (DAT) belongs to the AI & Big Data segment. Themes Cybersecurity ETF (SPAM) is part of the Cybersecurity segment. Both ETFs have the same top 3 sector exposures: Technology and Business Services. DAT is more expensive with a Total Expense Ratio (TER) of 0.58%, versus 0.35% for SPAM. DAT is down -3.16% year-to-date (YTD) with -$1M in YTD flows. SPAM performs better with 31.23% YTD performance, and +$2M in YTD flows. Run a side-by-side ETF comparison of DAT and SPAM below, and assess how they stack up in performance, liquidity, risk, exposure, holdings, and more, helping you select the best ETF for your investments.
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DAT vs SPAM performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 07/28/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | DAT SPAM | +4.54%-2.30% | +22.15%+28.64% | -3.16%+31.23% | -7.19%+23.81% | +47.78%n/a | n/an/a |
| Flows | DAT SPAM | -- | -$1M+$2M | -$1M+$2M | -$1M+$2M | -$253K- | -- |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | DAT SPAM | +38.71%+32.54% | +31.54%+27.64% | +29.25%n/a | n/an/a |
| Max drawdown | DAT SPAM | -18.32%-11.27% | -34.70%-23.70% | -34.70%n/a | n/an/a |
| Max drawdown duration | DAT SPAM | 57d32d | 293d218d | 293dn/a | n/an/a |
Trading data
DAT | SPAM | |
Last sale 7/29/2026 at 1:30 PM | $44.68 | $39.69 |
| Previous close 07/28/2026 | $43.88 | $40.22 |
| Consolidated volume 07/28/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of June 30, 2026
1-year trailing difference
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DAT | SPAM | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 7/29/2026 at 1:30 PM
Live
Closed
DAT | SPAM | |
|---|---|---|
| Last price | $44.68 | $39.69 |
| 1D performance | +1.84% | -1.31% |
| AuM | $5.49 M | $4.81 M |
| E/R | 0.58% | 0.35% |
Characteristics
DAT | SPAM | |
|---|---|---|
| Management strategy | Passive | Passive |
| Provider | ProShares | Themes Management Company |
| Benchmark | FactSet Big Data Refiners Index | Solactive Cybersecurity Index |
| N° of holdings | 25 | 34 |
| Asset class | Equities | Equities |
| Trailing 12m distribution yield | Join | Join |
| Inception date | September 30, 2021 | December 8, 2023 |
| ESG | No | No |
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Exposure
Countries
DAT
USA
80.07%
Israel
10.56%
Other
9.37%
SPAM
USA
74.33%
Other
25.67%
Sectors
DAT
Technology
85.27%
Business Services
14.46%
Other
0.27%
SPAM
Technology
92.65%
Other
7.35%
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Diversification
DAT
Total weight of top 15 holdings out of 15
69.59%
SPAM
Total weight of top 15 holdings out of 15
71.51%
Top 15 holdings
Data as of June 30, 2026
DAT
Commvault Systems, Inc.
5.37%
Zebra Technologies Corp.
5.20%
InterDigital, Inc.
5.12%
Dynatrace, Inc.
4.69%
NICE Ltd. (Israel)
4.65%
Datadog, Inc.
4.64%
Elastic NV
4.63%
Snowflake, Inc.
4.62%
Teradata Corp.
4.58%
Cellebrite DI Ltd.
4.48%
Tyler Technologies, Inc.
4.47%
AvePoint, Inc.
4.45%
Nutanix, Inc.
4.32%
MongoDB, Inc.
4.20%
Braze, Inc.
4.14%
SPAM
Fortinet, Inc.
6.34%
Okta, Inc.
6.20%
Palo Alto Networks, Inc.
6.15%
CrowdStrike Holdings, Inc.
5.96%
Nebius Group NV
5.96%
Rubrik, Inc.
5.30%
BlackBerry Ltd.
5.29%
F5, Inc.
4.53%
SentinelOne, Inc.
4.00%
Clear Secure, Inc.
3.81%
NextDC Ltd.
3.70%
Zscaler, Inc.
3.65%
Varonis Systems, Inc.
3.63%
Akamai Technologies, Inc.
3.50%
Qualys, Inc.
3.49%
Frequently asked questions about DAT and SPAM
How have the DAT and SPAM ETFs performed in 2026?
As of July 28, 2026, DAT is down -3.16% year-to-date (YTD), while SPAM has returned 31.23%. That puts SPAM better performer ahead so far this year.
Which ETF is attracting more investor money: DAT or SPAM?
Year-to-date, the DAT ETF saw -$1M in flows, compared to +$2M for SPAM.
Which ETF is more volatile: DAT or SPAM?
Over the past year, DAT had a volatility of 31.54%, while SPAM experienced 27.64%.
Which ETF is bigger: DAT or SPAM?
As of July 28, 2026, DAT holds $5.49 M in assets under management (AUM), while SPAM manages $4.81 M.
What sectors do the DAT and SPAM ETFs invest in?
DAT leans toward sectors like Technology and Business Services. Meanwhile, SPAM focuses on Technology.
What are the top holdings of the DAT ETF and SPAM ETF?
DAT top holdings include Commvault Systems, Inc., Zebra Technologies Corp. and InterDigital, Inc.. SPAM holds in its top three: Fortinet, Inc., Okta, Inc. and Palo Alto Networks, Inc..
Which ETF is more diversified: DAT or SPAM?
DAT holds 25 securities with 69.59% of its assets in the top 15. SPAM has 34 securities and a top 15 weight of 71.51%.
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