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REDDIT

13 MAY 2026 , WHAT ARE THE BIGGEST WINNERS TODAY AND WHY

# Biggest Winners Today (Under $5)

# 1. Rackspace Technology (RXT)

* Trading around: \~$3.50
* Up roughly: +55%
* Why it’s moving:
* Massive short squeeze
* AI/cloud infrastructure optimism
* Strong trading volume after renewed turnaround expectations

Rackspace was one of the strongest movers on the Nasdaq small-cap board today. 

# 2. Accuray Incorporated (ARAY)

* Trading around: \~$0.38
* Up roughly: +29%
* Why it’s moving:
* Speculative biotech/med-tech buying
* Penny-stock momentum traders piling in
* Heavy volume spike

# 3. Sabre Corporation (SABR)

* Trading around: \~$2.07
* Up roughly: +13%
* Why it’s moving:
* Airline/travel sector rebound
* Improved revenue expectations
* Recovery trade momentum

# 4. Humacyte (HUMA)

* Trading around: \~$1.08
* Up roughly: +9–10%
* Why it’s moving:
* Biotech speculation
* FDA-related optimism
* Retail momentum

# 5. Cabaletta Bio (CABA)

* Trading around: \~$4.00
* Up roughly: +7%
* Why it’s moving:
* Autoimmune therapy developments
* High-risk biotech rotation