Say what matters to you, get a diversified portfolio that reflects it
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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.
HN · launched Apr 8, 2026 · 5 upvotes (top 89%) · 0 views
Niche: personal financial planning software · 97 launches, 11 in the last 7 days ▼ -31% · Explore this niche →
Category and tags
- Fintech
- Agent / copilot
- B2C
- AI feature
- Commercial product
Visit website ↗ Source listing ↗
More like this: all 97 launches in personal financial planning software →
Could you build this?
Partial Creating the portfolio selection UI and filtering logic is accessible, but building a production-grade direct-indexing platform requires real-time financial market data feeds and portfolio optimization algorithms.
What it would actually take: A full production system requires integration with market data providers (e.g., FactSet, Refinitiv, or Polygon.io) for ESG and company revenue/classification data, paired with a quadratic programming optimizer (like cvxpy or proprietary risk models like Barra) to balance custom exclusions against benchmark tracking error. It also demands broker integration APIs (like Alpaca or DriveWealth) for fractional share execution and tax-loss harvesting.
Discussion
No comments on this launch.
Competitors
Other products that read as similar to this one : 364 launches clear the similarity bar, closest 8 shown.
Attention rank: #357 of 365 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 151 days after the earliest competitor.
- We charge $10/mo for wealth management that costs $100 elsewhere · hn · 2025-11-13 · 7 upvotes · similarity 0.50
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- Fulfilled · hn · 2025-11-20 · 5 upvotes · similarity 0.48
- Diversification Without the Jargon · ph · 2026-10-21 · 1 upvotes · similarity 0.46
- Which Account Should You Use to Invest? · ph · 2026-10-21 · 1 upvotes · similarity 0.45
- SharesLocker · ph · 2026-10-30 · 1 upvotes · similarity 0.45
- Simple Guide to Investing First $100 · ph · 2026-10-05 · 1 upvotes · similarity 0.45
- How to Grow Your First $100 Investment · ph · 2026-10-05 · 1 upvotes · similarity 0.45
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