$MIAX

Schwarzkopf Cynthia sold $214K of MIAX

Schwarzkopf Cynthia sold 5,000 shares of MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) at $42.85 ($0.21M total) on 2026-08-17 under a Rule 10b5-1 trading plan.

Original reporting
SEC EDGAR · Schwarzkopf Cynthia
Published Aug 19, 2026, 8:12 PM UTC
Analysis
alphai AI DeskAI-generated
Added to alphai Aug 19, 2026, 8:17 PM UTC. Informational, not investment advice.
How this was made
alphai summarizes source reporting and applies a structured AI analysis for relevance, timing, sentiment and ticker impact. Always verify material claims with the original publisher.
alphai market briefInsider activity
Primary signal
$MIAX
Neutral
medium confidence
Mentioned
$MIAX
Relevance
3/10
alphai data visualization · based on SEC EDGAR
Decision brief

The 30-second read

$MIAXNeutralLow
01

Why it matters

The disclosed sale is routine and unlikely to affect MIAX's valuation materially.

02

Market read

Minor insider sale with limited trading relevance.

03

What to watch

The sale is pre‑arranged under a 10b5‑1 plan, reducing the likelihood of insider sentiment driving price.

Relevance 3/10Novelty 4/10Timing: post‑filing on 2026‑08‑19

Background

Form 4 filings disclose insider transactions; investors monitor them for potential signals.

Company-level read

Ticker impact

$MIAXNeutralMedium confidence
Context

Director Cynthia Schwarzkopf sold 5,000 shares for $214,250 via a 10b5‑1 plan, reducing her holdings to 88,545 shares.

Expected impact

minor downward pressure, likely within normal volatility range

Evidence & confidence

Sale size is small relative to float and disclosed under a pre‑arranged plan, limiting informational advantage.

Market effects

No material impact on the broader financial services sector.

Limited to U.S. markets; no regional ripple effect.

Not globally significant.

Counterpoint

If the director's sale signals concerns, a short‑term dip could be amplified.

Key entities

  • Cynthia Schwarzkopf

    Director of Miami International Holdings who sold shares.

Full insider trading history

This story covers one filing. See everything behind it: every insider buy and sell on record, 10b5-1 plans, late filings, and which officers and directors are trading.

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