TOP TIERMARKET NEWSWIRE
Movers explained · 2026-11-11

Archived explainer. For the current picture see today's MIR page.

Why Is MIRION TECHNOLOGIES A (MIR) Stock Down Today?

By the Top Tier Newswire AI Desk · November 11, 2026 at 1:31 PM ET · reviewed against 3 wire stories

MIRION TECHNOLOGIES A (MIR) is down -6.72% in the latest session. Our newswire has captured 3 stories on MIR across 3 sources in the last 36 hours, with AI sentiment reading bearish (avg 39/100).

Public view, delayed 4h. Every headline, price and sentiment read below — and this write-up itself — reaches Pro subscribers live. Public readers see it once it clears the delay.

Mirion Technologies (MIR) shares fell 6.72% to $17.97 as recent gains cooled amid mixed valuation signals. The decline follows a period of strong momentum, with the stock having gained over 12% in the previous five days and nearly 16% in the past month.

What Happened

The session began with a 1.5% gap up to $19.55 from the prior close of $19.26. The stock reached a session high of $19.59 at 9:00 AM ET before reversing sharply to a low of $17.22 by 9:45 AM ET. Trading volume reached 5.2 million shares, which is 1.2 times the three-month daily average. B. Riley Securities recently reiterated a Buy rating on the stock but lowered its price target to $25. The company also announced it will present at Baird's 2026 Global Industrial Conference and reported that Sun Nuclear, a Mirion Medical company, launched the Simon command center for radiation oncology.

What The Data Shows

Fundamentals show a market cap of $4.7 billion and a P/E ratio of 179.7. Revenue grew 19.6% on a trailing twelve-month basis, while the net margin stands at 2.7%. The stock has a beta of 1.07 and trades within a 52-week range of $14.04 to $28.28. Recent 52-week data indicates the stock printed one fresh high and eight fresh lows on November 11, 2026. Insider activity includes a purchase by CFO Brian Schopfer on September 2, 2026, totaling $312,000. Congressional disclosures show Representative Ro Khanna bought between $1,001 and $15,000 on September 1, 2026, and Donald J. Trump bought between $15,001 and $50,000 on August 31, 2026.

What To Watch

Investors will monitor the company's upcoming third quarter 2026 financial results. The recent deterioration in sentiment trends, with the 30-day average at 51 and the last seven days at 43, suggests continued volatility as the stock consolidates after its recent rally.

AI-assisted analysis composed exclusively from headlines and data on the Top Tier newswire. Public view is delayed 4 hours from real time. Not financial advice.

MIR by the numbers

Last: $17.97Session: -6.72%Coverage: 3 stories / 3 sourcesAI sentiment: 39/100 (bearish)Mkt cap: $4.7BP/E: 179.752w: $14.04 to $28.28
MIR · Nov 11 session (5-min) · -8.10% vs prior close · updated 8:49 PM ET
$17.36$18.53$19.71prev close $19.26$17.707:00 AM10:00 AM1:00 PM4:00 PM7:00 PM7:00 AM · $19.557:15 AM · $19.558:30 AM · $19.589:00 AM · $19.269:05 AM · $17.979:10 AM · $18.629:15 AM · $18.679:20 AM · $18.609:25 AM · $18.609:30 AM · $18.009:35 AM · $17.969:40 AM · $17.489:45 AM · $17.669:50 AM · $17.759:55 AM · $17.9710:00 AM · $17.8610:05 AM · $17.9010:10 AM · $18.0410:15 AM · $18.0910:20 AM · $17.9810:25 AM · $17.9410:30 AM · $17.9710:35 AM · $18.0310:40 AM · $17.9910:45 AM · $17.9510:50 AM · $18.0210:55 AM · $18.0911:00 AM · $17.9511:05 AM · $17.9411:10 AM · $18.0311:15 AM · $18.0511:20 AM · $18.0911:25 AM · $18.1711:30 AM · $18.1311:35 AM · $18.0911:40 AM · $18.0211:45 AM · $18.0011:50 AM · $17.9111:55 AM · $17.9812:00 PM · $17.8912:05 PM · $17.9112:10 PM · $17.9912:15 PM · $17.9812:20 PM · $18.0012:25 PM · $18.0512:30 PM · $18.1112:35 PM · $18.1312:40 PM · $18.0612:45 PM · $18.0612:50 PM · $18.0912:55 PM · $18.051:00 PM · $17.961:05 PM · $17.951:10 PM · $17.951:15 PM · $17.971:20 PM · $17.991:25 PM · $17.971:30 PM · $17.951:35 PM · $17.961:40 PM · $17.981:45 PM · $17.951:50 PM · $17.931:55 PM · $17.912:00 PM · $17.882:05 PM · $17.902:10 PM · $17.952:15 PM · $17.912:20 PM · $17.892:25 PM · $17.952:30 PM · $17.952:35 PM · $17.932:40 PM · $17.952:45 PM · $17.842:50 PM · $17.792:55 PM · $17.823:00 PM · $17.733:05 PM · $17.683:10 PM · $17.753:15 PM · $17.673:20 PM · $17.693:25 PM · $17.753:30 PM · $17.703:35 PM · $17.663:40 PM · $17.703:45 PM · $17.883:50 PM · $17.713:55 PM · $17.704:00 PM · $17.984:05 PM · $17.504:10 PM · $17.704:20 PM · $17.644:25 PM · $17.705:25 PM · $17.805:30 PM · $17.796:30 PM · $17.707:00 PM · $17.70
AI sentiment, last 36h · averaged over 3 stories · 39/100 bearish
AI sentiment 39/100 (bearish)0 · bearish50bullish · 100

The headlines behind the move

Story flow · 3 stories on the wire, last 36h · hover or tap a dot for the headline
36h ago24h ago12h agopublishThe Fly · sentiment 38 · Mirion falls -6.7%The Fly · 38Mirion falls -6.7%Seeking Alpha · sentiment 42 · Mirion Technologies falls 6% as recent gains coolSeeking Alpha · 42Mirion Technologies falls 6% as recent gains coolGuruFocus · sentiment 38 · Mirion Technologies (MIR) Shares Fall Nearly 6% Amid Mixed Valuation SignalsGuruFocus · 38Mirion Technologies (MIR) Shares Fall Nearly 6% Amid Mixed Valuation Signals
2d agoGuruFocusBEARISH 38General

Mirion Technologies (MIR) Shares Fall Nearly 6% Amid Mixed Valuation Signals

2d agoSeeking AlphaBEARISH 42General

Mirion Technologies falls 6% as recent gains cool

Mirion Technologies shares fall nearly 7% to $17.94 in latest trading; the stock gains over 12% in five days and nearly 16% in a month.

2d agoThe FlyBEARISH 38General

Mirion falls -6.7%

Want the next move before the crowd? The live terminal streams every headline in real time with watchlist alerts, AI sentiment, and the full data stack behind this page.Get Pro Access →

More on MIR: full news and sentiment history. Sentiment scores are AI-derived research signals, not financial advice.

Earlier MIR move explainers: 2026-11-12 · 2026-11-11 · 2026-09-03