Say what matters to you, get a diversified portfolio that reflects it
I built this after realizing my index fund owned companies I'd never choose to support, and there was no easy way to do anything about it. Sylph lets you specify what you want to avoid (and what you want to support), then generates a diversified portfolio of individual stocks based on your priorities. Working demo, no account needed — just try it. Still early and actively building, so feedback is very welcome.
Say what matters to you, get a diversified portfolio that reflects it launched on April 8, 2026 with 5 votes, #1,846 of 21,248 launches that month and more than 75% of that year's launches.
What it does
Conversational inputs → sample portfolio (educational). No investment advice.
Does a similar job
all alternatives →- DDDouble – Design and invest in your own stock index2024 · ▲178
Hey everyone, we’re JJ and Mark from Double (https://double.finance). Over the past few months we’ve been working on an investing app that lets anyone design and invest in their own stock index. Start by picking one or more strategies. You can find 20+ starting points in Double that vary from direct index versions of classic ETFs (like SPY) to strategies focused on specific industries, market trends, or themes (like YC public companies). You can also easily build your own grouping of stocks, and tilt your strategy towards or away from certain stocks or sectors. Once you’ve chosen…
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