Market Movers — Open Interest
Compared to prior trading day
Total Symbols: 20
Avg Change: +44.2%
Most Active Sector: Industrials
As of: Aug 18, 2026
Biggest Increase ▲
| # | Symbol | Price | OI Change | Total OI | Sector |
|---|---|---|---|---|---|
| 1 | ACICAmerican Coastal Insurance Corp | $9.51 | +304.8% | 7225 | Financial Services |
| 2 | TNETTriNet Group, Inc. | $69.84 | +149.8% | 4141 | Industrials |
| 3 | REZIResideo Technologies, Inc. | $21.02 | +106.3% | 5145 | Industrials |
| 4 | NIQNIQ Global Intelligence plc | $17.32 | +93.3% | 3695 | Technology |
| 5 | ZNTLZentalis Pharmaceuticals, Inc. | $3.68 | +88.7% | 5343 | Healthcare |
| 6 | HDSNHudson Technologies, Inc. | $5.64 | +80.5% | 3296 | Basic Materials |
| 7 | KCKingsoft Cloud Holdings Limited | $10.84 | +62.8% | 27434 | Technology |
| 8 | KMPRKemper Corporation | $26.21 | +62.7% | 610 | Financial Services |
| 9 | ASCArdmore Shipping Corporation | $18.01 | +60.8% | 6303 | Industrials |
| 10 | RUMRumble Inc. | $8.10 | +43.8% | 138196 | Communication Services |
Biggest Decrease ▼
| # | Symbol | Price | OI Change | Total OI | Sector |
|---|---|---|---|---|---|
| 1 | CUZCousins Properties Incorporated | $29.00 | -28.3% | 1531 | Real Estate |
| 2 | LYGLloyds Banking Group Plc | $6.06 | -26.7% | 32592 | Financial Services |
| 3 | GETYGetty Images Holdings, Inc. | $0.27 | -20.2% | 62912 | Communication Services |
| 4 | BRSLBrightstar Lottery PLC Trading | $11.00 | -17.7% | 6591 | Consumer Cyclical |
| 5 | EYPTEyePoint, Inc. | $5.47 | -17.1% | 100315 | Healthcare |
| 6 | SPSCSPS Commerce, Inc. | $77.38 | -15.7% | 2131 | Technology |
| 7 | PSXPhillips 66 | $243.49 | -11.9% | 63871 | Energy |
| 8 | WCNWaste Connections, Inc. | $165.53 | -11.2% | 8412 | Industrials |
| 9 | HIWHighwoods Properties, Inc. | $30.85 | -10.3% | 3091 | Real Estate |
| 10 | SKESkeena Resources Limited | $31.08 | -10.2% | 7959 | Basic Materials |
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.