Data as of .
CHAT vs TCAI: which is really different?
CHAT and TCAI hold 14% of their weight in the same names, and TCAI returned more over the year.
ETFIQ Off-Index Score: TCAI scores higher
How much of it is not the index it is sold as an alternative to?
A percentile among the 379 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
14% of the two portfolios are the same securities at the same weight.
What they hold in common
By the books each fund has filed, CHAT and TCAI hold 14% of their money in the same securities at the same weight.
| Holding | CHAT | TCAI |
|---|---|---|
| Micron Technology Inc | 3.09% | 7.64% |
| Vertiv Holdings Co | 2.12% | 4.48% |
| Dell Technologies Inc | 1.83% | 8.94% |
| Arista Networks Inc | 1.81% | 1.71% |
| Nebius Group NV | 3.02% | 1.55% |
| Schneider Electric SE | 1.32% | 1.94% |
| Coherent Corp | 2.55% | 0.96% |
| Lumentum Holdings Inc | 2.33% | 0.86% |
| NVIDIA Corp | 6.92% | 0.59% |
| Celestica Inc | 1.28% | 0.43% |
| Only in CHAT | Only in TCAI |
|---|---|
| Alphabet Inc 5.69% | Seagate Technology Holdings PL 5.77% |
| SK hynix Inc 4.40% | Western Digital Corp 5.14% |
| Microsoft Corp 3.72% | Ciena Corp 5.10% |
| Amazon.com Inc 3.42% | Quanta Services Inc 3.58% |
| ASML Holding NV 3.27% | Sandisk Corp/DE 3.47% |
| Advanced Micro Devices Inc 3.14% | MYR Group Inc 3.29% |
| Astera Labs Inc 2.86% | nVent Electric PLC 3.18% |
| SoftBank Group Corp 2.78% | Credo Technology Group Holding 3.03% |
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 dated May 31, 2026 and Sep 18, 2026.
Performance, window by window
| Window | Total return | vs the S&P 500 | vs the Nasdaq-100 | |||
|---|---|---|---|---|---|---|
| CHAT | TCAI | CHAT | TCAI | CHAT | TCAI | |
| 3 months | −12.2% | −16.4% | −14.5 pts | −18.6 pts | −9.8 pts | −13.9 pts |
| 6 months | +43.6% | +34.7% | +25.6 pts | +16.7 pts | +19.4 pts | +10.5 pts |
| 1 year | +52.0% | +67.6% | +35.5 pts | +51.0 pts | +30.3 pts | +45.8 pts |
| 3 years | +237.0% | not published | +158.6 pts | not published | +138.8 pts | not published |
| Since launch | +256.5% | +88.8% | +166.8 pts | +65.8 pts | +138.6 pts | +59.4 pts |
| CHAT Roundhill Generative AI & Technology ETF Holds 47 stocks in artificial intelligence, 48% of its weight in S&P 500 companies | TCAI Tortoise AI Infrastructure ETF Holds 43 stocks in aI infrastructure and chips, 63% of its weight in S&P 500 companies | |
|---|---|---|
| Issuer | Roundhill | Tortoise |
| Theme | Artificial intelligence | AI infrastructure and chips |
| In the S&P 500 | 47.9% | 63.2% |
| Active share vs the S&P 500 | 72.1% | 92.7% |
| In the Nasdaq-100 | 44.1% | 26.2% |
| Holdings | 47 | 43 |
| Top ten, share of the fund | 39.5% | 50.6% |
| Expense ratio | 0.75% | 0.65% |
| Fee for the differing part | 1.04% | 0.70% |
| Total return, 1 year | +52.0% | +67.6% |
| vs the S&P 500 | +35.5 pts | +51.0 pts |
| vs the Nasdaq-100 | +30.3 pts | +45.8 pts |
| Below its high | −13.7% | −18.4% |
| Net assets | $1.8bn | $217m |
CHAT in plain words
By weight, 48% of CHAT's portfolio is stocks that are also in the S&P 500; its active share against the S&P 500 is 72%. The top ten holdings are 40% of the fund across 47 positions, as published by its issuer for Sep 18, 2026. Over the year to Sep 18, 2026 the fund returned +52.0% with distributions reinvested against +16.6% for the S&P 500, so a holder was ahead by 35.5 pts. It sits 13.7% below its all-time high of Jun 22, 2026.
TCAI in plain words
By weight, 63% of TCAI's portfolio is stocks that are also in the S&P 500; its active share against the S&P 500 is 93%. The top ten holdings are 51% of the fund across 43 positions, as filed for May 31, 2026. Over the year to Sep 18, 2026 the fund returned +67.6% with distributions reinvested against +16.6% for the S&P 500, so a holder was ahead by 51.0 pts. It sits 18.4% below its all-time high of Jun 22, 2026.
Questions people ask
- Do CHAT and TCAI hold the same stocks?
- By their latest filings, 14% 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, CHAT or TCAI?
- CHAT has 48% of its weight in S&P 500 names and TCAI has 63%, so TCAI differs more from the index.
- Which is cheaper, CHAT or TCAI?
- CHAT charges 0.75% a year and TCAI charges 0.65%, so TCAI 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, CHAT against TCAI, data as of Sep 18, 2026. https://etfiq.com/compare/themes/chat-vs-tcai Free to use with attribution; the underlying files are at Open data.