The largest buffer ETFs on IWM
See 15 funds ranked by net assets. Updated Oct 20, 2026. Every fund here is struck on iShares Russell 2000 ETF, so the choice between them is the buffer, the cap and when the period ends.
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| # | Ticker | Fund | Net assets ↓ | Buffer | Period ends | Source |
|---|---|---|---|---|---|---|
| 1 | KJAN | Innovator U.S. Small Cap Power Buffer ET | $311m | 15% | Dec 31, 2026 | Issuer page, Oct 20, 2026 |
| 2 | KJUL | Innovator U.S. Small Cap Power Buffer ET | $225m | 15% | Jun 30, 2027 | Issuer page, Oct 20, 2026 |
| 3 | KAPR | Innovator U.S. Small Cap Power Buffer ET | $177m | 15% | Mar 31, 2027 | Issuer page, Oct 20, 2026 |
| 4 | KOCT | Innovator U.S. Small Cap Power Buffer ET | $168m | 15% | Sep 30, 2027 | Issuer page, Oct 20, 2026 |
| 5 | SAUG | FT Vest U.S. Small Cap Moderate Buffer E | $127m | 15% | Aug 20, 2027 | Issuer page, Oct 20, 2026 |
| 6 | SFEB | FT Vest U.S. Small Cap Moderate Buffer E | $127m | 15% | Feb 19, 2027 | Issuer page, Oct 20, 2026 |
| 7 | SNOV | FT Vest U.S. Small Cap Moderate Buffer E | $113m | 15% | Nov 20, 2026 | Issuer page, Oct 20, 2026 |
| 8 | SMAY | FT Vest U.S. Small Cap Moderate Buffer E | $110m | 15% | May 21, 2027 | Issuer page, Oct 20, 2026 |
| 9 | RBUF | Innovator U.S. Small Cap 10 Buffer ETF - | $107m | 10% | Dec 31, 2026 | Issuer page, Oct 20, 2026 |
| 10 | KNOV | Innovator U.S. Small Cap Power Buffer ET | $85m | 15% | Oct 31, 2026 | Issuer page, Oct 20, 2026 |
| 11 | KAUG | Innovator U.S. Small Cap Power Buffer ET | $66m | 15% | Jul 31, 2027 | Issuer page, Oct 20, 2026 |
| 12 | KDEC | Innovator U.S. Small Cap Power Buffer ET | $66m | 15% | Nov 30, 2026 | Issuer page, Oct 20, 2026 |
| 13 | KJUN | Innovator U.S. Small Cap Power Buffer ET | $57m | 15% | May 31, 2027 | Issuer page, Oct 20, 2026 |
| 14 | KMAY | Innovator U.S. Small Cap Power Buffer ET | $46m | 15% | Apr 30, 2027 | Issuer page, Oct 20, 2026 |
| 15 | CPRJ | Calamos Russell 2000 Structured Alt Prot | $42m | 100% | Jun 30, 2027 | Issuer page, Oct 20, 2026 |
Method
The 27 buffer and floor ETFs ETFIQ measures on iShares Russell 2000 ETF, of which 27 publish net assets. Across the funds listed here the buffer each fund set out with runs from 10.0% to 100.0%.
The rest of the method
Size shows where the money is, not what a fund did. The list sorts one published figure, with no scoring or weighting. Every fund ETFIQ covers in this category is eligible, closed funds included.
ETFIQ links to the documents behind every figure; a link is not an endorsement. A ranking is not a recommendation or an opinion.
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ETFIQ, The largest buffer ETFs on IWM, ranked by net assets, data as of Oct 20, 2026. https://etfiq.com/rankings/buffer-largest-on-iwm
ETFIQ. (Oct 20, 2026). The largest buffer ETFs on IWM, ranked by net assets. Retrieved from https://etfiq.com/rankings/buffer-largest-on-iwm
[The largest buffer ETFs on IWM, ranked by net assets (ETFIQ, Oct 20, 2026)](https://etfiq.com/rankings/buffer-largest-on-iwm)
Free to use with attribution for figures ETFIQ computes; issuer data stays under its owner's terms. The underlying files are at Open data.