— Why it moved
Why HSCS Stock Spiked Today — June 23, 2026
HeartSciences announced it's merging into a Zcash miner, and the 7:41 AM premarket alert had two hours of runway to a 26% peak before the afternoon gave it all back.
## What moved it An all-stock merger with Fortitude Mining Holdings, a Zcash crypto miner. The combined company drops the heart-diagnostics identity and is set to trade as "TUDE" later this year. A European patent for the company's AI-ECG tech landed the same morning, but the crypto pivot was the trade.
## The mechanics A 3.1M-share float, $5.9M market cap, and a 68% gap already on the tape when the alert fired premarket. 136M shares traded against that float. Crypto-pivot headlines on medical microcaps are a recurring squeeze template.
## Numbers - Cap: ~$5.9M / float: 3.1M - Day volume: 135.7M, the float turned over 40+ times - Prev close: $1.77 → alert at $2.98 premarket, +68% - 52w range: $1.63–$6.47
## Where it ended up Stock Pulse flagged it premarket at 7:41 AM at $2.98. It chopped for two hours, then ran to $3.75 at 9:48 AM, up 26% from the alert with real volume behind it. The afternoon was a slow bleed back to a $2.75 close, 7.7% under the alert price.
## Reality check - Peak to close it gave back everything and finished below the alert. The window was the first twenty minutes of regular trading. - The merger means holders of a cardiac-AI company end up owning a speculative Zcash miner. That's a pivot away from the product, not a validation of it. - This already happened. It's a breakdown of why it ran, not a reason to buy it.