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Equity · Financial Services

MIAX

Miami International Holdings, Inc. · NYSE

$43 +1.37% 1D Finazon · prior-day close · Sep 8, 2026

Reddit mentioned MIAX 4 times in the 30 days to 9 September 2026, across 2 of the communities we track. All of them were scored for sentiment: 75% read bullish, 0% bearish and 25% neither. Reddit data updated 9 September 2026.

Price · Chart
Our own end-of-day closes 61 sessions
$50 $35 11 Jun 8 Sep

The line runs $41 on 11 June through $43 on 8 September, on a scale from $35 to $50. Days the market did not trade hold the previous close, flat.

The chart above plots the price of MIAX over the range selected — one day to the full history — drawn by TradingView from their own data. Our own licensed end-of-day series holds 61 sessions over that window: $41 on 11 June 2026 through $43 on 8 September 2026.

Market cap $4.3B
P/E (TTM) 53.8
52-week range $35 – $57
Avg volume 158.4K
Mentions · 30d 4

Finazon · prior-day close · valuation computed from SEC EDGAR filings · as of Sep 9, 2026

MIAX · crowd attention × price

Share ↗
4 mentions

Day4 Sep 2026

MENTIONS10–2 / day
PRICE$42.42$40–$46Source: Finazon
MIAX over the last 30 days, plotting daily Reddit mentions as bars, left-hand scale; the daily closing price as a line on its own right-hand scale, solid across consecutive trading days, held flat and diagonally hatched over days the market was closed, diagonally hatched over days we hold no close for.per day012usd$40$42$44$4611 Aug18 Aug26 Aug2 Sep9 Sep
MIAX over the last 30 days, plotting daily Reddit mentions as bars, left-hand scale; the daily closing price as a line on its own right-hand scale, solid across consecutive trading days, held flat and diagonally hatched over days the market was closed, diagonally hatched over days we hold no close for.11 Aug26 Aug9 Sep
The Distributed Sentinel 09 Sep 2026

MIAX drew 4 Reddit mentions over the 30 days to 9 September 2026

This chart in words

The chart plots daily Reddit mentions of MIAX over the 30 days to 9 September 2026: 4 in total, busiest on 12 August with 1, and 1 on the last day counted. The line is the daily close over the same window: $42.35 on 11 August, $43 on 8 September. Of those days, 20 were trading sessions and the other 10 are hatched on the chart. On 9 of them no session took place, and the last close before it is carried forward rather than plotted; on 1 of them we hold no close at all, which is a gap in our own record rather than a closure we can prove.

Finazon · prior-day close, some closes dollar-rounded at the source

Crowd sentiment on MIAX · 30d

n = 4 scored · Method

4 mentions of MIAX were scored for sentiment in these 30 days, so each one carries 1/4 of any share. A split that coarse states the sample size and not the crowd — so none is drawn. The chart on this page applies the same 5-mention floor to every day it plots.

Where MIAX is discussed

(30d)
r/stocks 75% 3 +0.36
r/wallstreetbets 25% 1 +0.15

MIAX insider trades

SEC Form 4 · last 90 days · newest reported trade 3 Sep 2026
Open-market buys 0
Open-market sells 29
Net sold $36.24M
Non-trade filings 66
Date Insider Type Shares Value
03 Sep 2026 Deitzel Edward EVP, CRO, CCO MIAX Exchanges Sell 11,000 $464K
03 Sep 2026 Gallagher Thomas P. Chairman & CEO Sell 47,000 $1.99M
02 Sep 2026 Comly Barbara J. EVP, GC & Corporate Secretary Sell 44,445 $1.80M
02 Sep 2026 Teekell Judson Gray Director Sell 8,545 $353K
02 Sep 2026 Schafer Douglas M. JR EVP and CIO Sell 48,000 $1.94M
19 Aug 2026 Gallagher Thomas P. Chairman & CEO Sell 149,700 $6.16M
17 Aug 2026 Emmons Lance EVP and CFO Sell 35,000 $1.50M
17 Aug 2026 Schwarzkopf Cynthia Director Sell 5,000 $214K
04 Aug 2026 Comly Barbara J. EVP, GC & Corporate Secretary Sell 44,445 $2.03M
04 Aug 2026 Deitzel Edward EVP, CRO, CCO MIAX Exchanges Sell 11,000 $504K
04 Aug 2026 Eckert Kurt M. Director Sell 1,063 $49K
04 Aug 2026 Gallagher Thomas P. Chairman & CEO Sell 48,334 $2.21M

Showing the 12 most recent of 29 open-market trades in this window. The figures above count all of them.

Compensation mechanics Share grants, option exercises, tax withholding and transfers. They reach the same Form 4 as a trade, but they are not the insider buying or selling on the open market, so no purchase or sale value applies to them.

Date Insider Type Shares Value
03 Sep 2026 Deitzel Edward EVP, CRO, CCO MIAX Exchanges Option exercise 11,000 $132K
03 Sep 2026 Gallagher Thomas P. Chairman & CEO Option exercise 89,603 $1.16M
02 Sep 2026 Comly Barbara J. EVP, GC & Corporate Secretary Option exercise 44,445 $533K
02 Sep 2026 Schafer Douglas M. JR EVP and CIO Option exercise 48,000 $576K
18 Aug 2026 Comly Barbara J. EVP, GC & Corporate Secretary Tax withheld 43,420 $1.84M
18 Aug 2026 Gallagher Thomas P. Chairman & CEO Tax withheld 150,300 $6.37M
17 Aug 2026 Schwarzkopf Cynthia Director Option exercise 5,000 $60K
04 Aug 2026 Comly Barbara J. EVP, GC & Corporate Secretary Option exercise 44,445 $533K
04 Aug 2026 Deitzel Edward EVP, CRO, CCO MIAX Exchanges Option exercise 11,000 $132K
04 Aug 2026 Eckert Kurt M. Director Option exercise 1,063 $13K
04 Aug 2026 Gallagher Thomas P. Chairman & CEO Option exercise 48,334 $580K
04 Aug 2026 Jayabalan Harish EVP, CISO and CRO Option exercise 20,000 $259K

Showing the 12 most recent of 66 compensation filings in this window. The figures above count all of them.

MIAX reported financials

SEC EDGAR XBRL

MIAX reported revenue of $1.4B for the fiscal year ended 31 Dec 2025. Net income over the same period was −$70.0M.

Figure Reported Period
Revenue $1.4B 31 Dec 2025 fiscal year
Net income −$70.0M 31 Dec 2025 fiscal year
Diluted EPS −$1.00 31 Dec 2025 fiscal year
Total assets $1.6B 30 Jun 2026 at period end
Total equity $1.2B 30 Jun 2026 at period end

Source: SEC EDGAR XBRL company facts · latest period ended 30 Jun 2026

MIAX earnings

SEC EDGAR
Date Period EPS Revenue
30 Jun 2026 Q2 2026 $0.40 $388M
31 Mar 2026 Q1 2026 $1.56 $370M
31 Dec 2025 FY 2025 $-1.00 $1.36B
30 Sep 2025 Q3 2025 $-1.46 $340M
30 Jun 2025 Q2 2026 $0.30 $328M
31 Mar 2025 Q1 2026 $-0.34 $327M
31 Dec 2024 FY 2025 $1.39 $1.14B
30 Sep 2024 Q3 2025 $-0.05 $277M

Next report no date announced in SEC filings yet

Reported figures & scheduled dates · SEC EDGAR filings

MIAX institutional holders

SEC Form 13F

5 of the 45 institutional funds we track reported a MIAX position for the quarter ended 30 Jun 2026 — a combined $126.5M; the latest of those filings landed 02 Sep 2026.

Fund Action Shares Value
Balyasny Asset Management New position 1,682,924 $62.5M
Two Sigma Investments Held (±25%) −0.6% shares 888,109 $33.0M
D. E. Shaw & Co. Held (±25%) +10.8% shares 355,528 $13.2M
Marshall Wace Added +134.4% shares 287,480 $10.7M
Millennium Management Trimmed −63.5% shares 189,105 $7.0M
Man Group Exited

Source: SEC EDGAR 13F filings

MIAX fails-to-deliver

SEC CNS data

On 29 Jul 2026, 484 shares of MIAX failed to deliver (about $22K).

Settlement date Shares failed Notional % of shares out
29 Jul 2026 484 $22K <0.001%

Source: SEC fails-to-deliver (CNS) data

Congressional trades in MIAX

STOCK Act disclosures

The most recent congressional trade disclosed in MIAX is a purchase by Gilbert Ray Cisneros, Jr. (house, CA), dated 20 Mar 2026.

Date Member Type Amount
20 Mar 2026 filed 07 Apr 2026 Gilbert Ray Cisneros, Jr. house · Democrat–CA Purchase $15K–$50K

Source: U.S. House of Representatives financial disclosures

MIAX — frequently asked questions

From live data

How often is MIAX mentioned on Reddit?

MIAX was mentioned 1 times in the last 7 days across the finance subreddits we track, and 4 times over the trailing 30 days.

Is Reddit bullish or bearish on MIAX?

Across 4 classified MIAX mentions in the last 30 days, 75% read bullish, 0% bearish and 25% neutral. Crowd sentiment is a social signal, not investment advice.

When did MIAX last report earnings?

MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) last reported earnings on 30 Jun 2026 for Q2 2026, per SEC filings.

Are MIAX insiders buying or selling?

SEC Form 4 filings over the last 90 days show 0 buys and 29 sells by MIAX insiders on the open market. A further 66 filings were grants, awards, gifts or exercises rather than open-market trades.

What exchange is MIAX listed on?

MIAMI INTERNATIONAL HOLDINGS, INC. trades on NYSE under the ticker MIAX.

Answers are generated from the live figures on this page — Reddit crowd data, SEC filings and open company records — and update as the data does.