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Screening ETFs by wrapper selects funds by what kind of instrument they are, using the nine-value wrapper tier and the fund’s filed structural flags. It is the axis for questions like “every leveraged fund regardless of what it tracks” or “buffer funds on the S&P 500” — the structural half of a question whose exposure half is the taxonomy.
Plan: Fund · Credits: 1 per call; screen facets are free

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The Wrapper and Structure Filters

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string
Comma-separated wrapper tiers; matches ANY. The nine values: plain_beta, leveraged_inverse, structured_outcome, option_income, physical_commodity, futures_commodity, crypto, currency, alternative.
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boolean
true selects funds whose holdings market values are margin or premium rather than exposure — the funds where summing market_value is wrong by construction. See ETF Wrapper Tiers.
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boolean
The filed leveraged/inverse flag, from the fund’s own SEC filing — the issuer’s claim, kept separate from the computed leveraged_inverse tier so the two can be compared.
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boolean
The filed index-fund flag: true for index trackers, false for active funds.
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boolean
The filed fund-of-funds flag.
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boolean
default:"true"
Trading status, not management style: by default delisted and superseded funds are excluded; pass false to include them.
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string
Primary listing exchange, e.g. AMEX, NASDAQ, CBOE, NYSE.

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Filed Flags and Computed Labels Can Disagree

multi_inverse and is_index are read from filings; the tier is computed by FocusAlpha. A fund whose filed flags and computed tier disagree is a finding worth looking at, not a data error — the profile’s labels block shows both.

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A Wrapper Filter Crosses With Everything Else

The tier composes with every other axis: tier=leveraged_inverse with max_flow_20d=-50000000 is “leveraged funds bleeding assets”; tier=structured_outcome with taxonomy_prefix=equity.structured_outcome.us_large_cap narrows buffers to the S&P 500 complex; tier=option_income sorted by aum ranks the covered-call complex. By asset class · By flows and premium · By size and fees · ETF screening overview