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ARM vs TSM — which is the better buy? — what our data shows

⚡ TradesZ research ·Updated July 20, 2026 ·~2 min read ·Grounded in SEC data

Both ARM and TSM are at the heart of how modern chips get designed and made — they're basically the backbone of the AI boom. But the data we have on each one tells pretty different stories.

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What our data shows

Arm Holdings plc American Depositary Shares logo ARM Arm Holdings plc American Depositary Shares 🟢Bullish lean
Over 831 major investment funds — including household names like Berkshire Hathaway — have reported owning ARM, which means a lot of sophisticated money has quietly been piling in, especially around the AI chip theme.
🐋 13F · 831AI compute
TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD logo TSM TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD Neutral
Our data shows no warning signs for TSM, which is reassuring, but we also don't have the same rich picture of big funds stacking up positions the way we do for ARM.

The takeaway

Neutral

ARM comes with a trail of big-name investors backing it, which is a meaningful signal of confidence; TSM has no red flags but also less institutional footprint in our data — so the difference right now is really about how much visible smart-money conviction matters to you.

But watch out
Smart-money signals lag the market (13F filings ~45 days) and never guarantee direction — always check the latest price and news yourself.
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Informational research, not personalized investment advice.