Healthcare Sector
Market Tracker
Represents the strikes that had the highest premium of whale flow (on the ASK side) over the past 5 trading days.
Represents the strikes that had the highest premium of whale flow (on the BID side) over the past 5 trading days.
Total Open Interest of Calls & Puts across all strikes and expirations over the past 16 trading days.
| Expires | Type | Strike | OI | Change | Percent |
|---|---|---|---|---|---|
| 01/09/2026 | PUT | $36.50 | 1,095 | +1,095 | |
| 01/16/2026 | PUT | $31.00 | 341 | +341 | |
| 03/20/2026 | PUT | $35.00 | 2,560 | +211 | +8.98% |
| 12/26/2025 | PUT | $39.50 | 2,247 | +194 | +9.45% |
| 01/02/2026 | PUT | $37.50 | 169 | +128 | +312.20% |
| 01/16/2026 | CALL | $43.00 | 152 | +107 | +237.78% |
| 01/16/2026 | CALL | $42.50 | 4,033 | -21 | -0.52% |
| 01/02/2026 | CALL | $41.00 | 774 | -25 | -3.13% |
| 01/16/2026 | CALL | $40.00 | 12,885 | -32 | -0.25% |
| 12/26/2025 | CALL | $40.00 | 846 | -34 | -3.86% |
| 01/16/2026 | CALL | $37.50 | 4,238 | -244 | -5.44% |
| 01/16/2026 | PUT | $37.50 | 3,079 | -614 | -16.63% |
Contracts with largest changes in open interest from the previous trading day to the current/most recent.
| Name | Pct Held | Shares | Total |
|---|---|---|---|
| Fundamental Investors Inc | 4.26% | 23.48M | 1.5B |
| Vanguard Total Stock Market Index Fund | 3.13% | 17.21M | 1.1B |
| Vanguard Mid-Cap Index Fund | 2.39% | 13.18M | 840.66M |
| Vanguard 500 Index Fund | 2.38% | 13.09M | 835.16M |
| Vanguard Specialized-Health Care Fund | 1.62% | 8.9M | 568.06M |
| American Balanced Fund | 1.32% | 7.24M | 462.04M |
| Capital World Growth and Income Fund | 1.28% | 7.06M | 450.4M |
| Fidelity 500 Index Fund | 1.13% | 6.21M | 396.05M |
| SPDR S&P 500 ETF Trust | 1.08% | 5.96M | 380.43M |
| iShares Core S&P 500 ETF | 0.92% | 5.05M | 322.45M |
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