Market Movers — Open Interest
Compared to prior trading day
Total Symbols: 20
Avg Change: +42.4%
Most Active Sector: Industrials
As of: May 20, 2026
Biggest Increase ▲
| # | Symbol | Price | OI Change | Total OI | Sector |
|---|---|---|---|---|---|
| 1 | RAMPLiveRamp Holdings, Inc. | $37.73 | +361.4% | 7715 | Technology |
| 2 | FSSFederal Signal Corporation | $112.24 | +162.3% | 438 | Industrials |
| 3 | CMCOColumbus McKinnon Corporation | $14.24 | +82.1% | 4436 | Industrials |
| 4 | FLDFold Holdings, Inc. | $1.27 | +79.6% | 765 | Financial Services |
| 5 | TENBTenable Holdings, Inc. | $25.50 | +62.8% | 10874 | Technology |
| 6 | GVAGranite Construction Incorporat | $130.74 | +59.5% | 1136 | Industrials |
| 7 | GLGlobe Life Inc. | $154.46 | +58.2% | 6109 | Financial Services |
| 8 | CCChemours Company (The) | $22.27 | +56.9% | 92383 | Basic Materials |
| 9 | TKRTimken Company (The) | $117.20 | +55.1% | 8881 | Industrials |
| 10 | BCEBCE, Inc. | $24.17 | +54.4% | 33764 | Communication Services |
Biggest Decrease ▼
| # | Symbol | Price | OI Change | Total OI | Sector |
|---|---|---|---|---|---|
| 1 | LFUSLittelfuse, Inc. | $441.26 | -25.3% | 1990 | Technology |
| 2 | BRTBRT Apartments Corp. (MD) | $14.54 | -25.1% | 262 | Real Estate |
| 3 | ETONEton Pharmaceuticals, Inc. | $34.45 | -22.2% | 2114 | Healthcare |
| 4 | SAROStandardAero, Inc. | $26.47 | -20.7% | 2559 | Industrials |
| 5 | CRSCarpenter Technology Corporatio | $422.01 | -18.1% | 6646 | Industrials |
| 6 | ITTITT Inc. | $193.34 | -17.9% | 4956 | Industrials |
| 7 | APOGApogee Enterprises, Inc. | $34.31 | -16.4% | 281 | Industrials |
| 8 | USFDUS Foods Holding Corp. | $81.12 | -15.2% | 3690 | Consumer Defensive |
| 9 | DSGNDesign Therapeutics, Inc. | $11.10 | -11.9% | 37708 | Healthcare |
| 10 | SKYWSkyWest, Inc. | $83.29 | -11.2% | 1593 | Industrials |
How to Use Open Interest Movers
Use open interest movers to spot where options behavior changed the most on the close, then confirm whether the shift came with tradable liquidity and a clear catalyst.
Big changes in one options metric can be noisy or one-off, so always check the broader chain before acting.