Today's fire and ice.
As of the latest reading, 9 of about 2,938 large US stocks have caught fire today (up 10% or more) and 22 have frozen (down 10% or more). The StockFloc Floc Heat Index reads 29 out of 100, a frozen tape.
Updated September 15, 2026 at 3:43 PM EDT. Quotes use a commercially licensed feed and may be delayed about 15 minutes.
Floc Heat Index
0 to 100. 50 is neutral; above 50 the market ran hot, below 50 it froze.
Up 10% or more today, of about 2,938 large US stocks.
Down 10% or more today. 0.4 on fire for every one frozen.
🔥 Biggest gainers today
- BBNX 🔥 +16.20%
- SWKS 🔥 +11.98%
- KRMN 🔥 +10.07%
- FPS +9.71%
- TEM +9.58%
- TENB +9.57%
- ADPT +9.07%
- CAI +8.60%
- QRVO +8.50%
- RVTY +8.40%
🧊 Biggest losers today
- ENVA 🧊 −23.91%
- ALHC 🧊 −22.82%
- CONL 🧊 −19.87%
- CTMX 🧊 −16.36%
- DMRA 🧊 −13.48%
- XRP 🧊 −11.44%
- ARWR 🧊 −11.20%
- ETHU 🧊 −11.08%
- CRCL 🧊 −11.06%
- CABA 🧊 −11.00%
Performance is temperature.
StockFloc reads the market as heat: any stock that moves 10% or more in a day catches fire (a big gain) or freezes into ice (a big loss). This page sums up the whole market that way each day, and the Floc Heat Index turns it into a single 0 to 100 number. Watch your own list react the same way in the free StockFloc app, on iPhone and Android, with no brokerage account.
Not investment advice. StockFloc is not a broker. The Floc Heat Index is a StockFloc metric for information and entertainment, computed from delayed market data.