Ivolution Research Journal · Inconclusive report

VIX-expiry Wednesday drift

The monthly VIX-expiry Wednesday carries a different close-to-close index return than ordinary Wednesdays (a hedging/settlement-flow calendar effect).

CAL-17 · v1·Inconclusive·Narrative — weak evidence·Calendar

Cite as: CAL-17: VIX-expiry Wednesday drift. Ivolution Research Journal.

Publication status

The completed study did not produce decisive evidence for or against the hypothesis. It is not citable as an edge.

The abstract and product-safe scope metadata are public. Methodology, falsification, limitations, citations, and governed results for CAL-17 are available to Terminal + AI members.

Symbols

SPX

Regimes

Aggregate · Positive gamma · pin · Positive gamma · drift · Negative gamma · trend · Negative gamma · chop · Event day

Horizons