(Bloomberg) -- The first hundred days of Donald Trump’s presidency have seen a slew of new ETFs that seek to capitalize on the administration’s policies and platforms. A few have proven to be decent bets.

Thematic ETFs have proliferated as asset managers seek new avenues for growth. Filings show funds started in the last six months looking to trade on political agendas, such as tax reform and infrastructure spending. Such strategies are a matter of survival for smaller issuers, with the likes of Vanguard and BlackRock already dominating "plain-vanilla" categories, according to Bloomberg Intelligence’s Eric Balchunas.

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