TOP TIERMARKET NEWSWIRE
Movers explained · October 28, 2026

Why Is BOSTON SCIENTIFIC CO (BSX) Stock Moving Today?

By the Top Tier Newswire AI Desk · August 31, 2026 at 3:26 AM ET · reviewed against 21 wire stories

BOSTON SCIENTIFIC CO (BSX) is drawing unusual attention today. Our newswire has captured 21 stories on BSX across 12 sources in the last 36 hours, with AI sentiment reading bearish (avg 41/100).

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Boston Scientific Co (BSX) stock is moving lower today, down 9.9% in the last eight sessions as the share price declined from $52.01 to $46.84. The drop is attributed to a cybersecurity incident that disrupted the company’s global operations, including order processing and shipping. The incident has raised concerns about operational resilience and potential impacts on revenue, particularly in a sector where consistent service delivery is critical.

What Happened

Boston Scientific disclosed a cybersecurity threat that has caused a global disruption to its operations. The company is currently investigating the incident, which has affected key functions such as order fulfillment and shipping. This news comes amid a broader market decline, as the Nasdaq 100 fell on rising inflation concerns and renewed rate-hike expectations. The healthcare sector, already under pressure, saw Boston Scientific and other names like Veeva Systems and Lilly highlighted in recent market updates. Boston Scientific’s recall-related issues further contributed to the negative sentiment around the stock.

What The Data Shows

The stock has a beta of 0.57, indicating it is less volatile than the broader market, but the recent cybersecurity incident has pushed sentiment lower. The 30-day average sentiment score is 44 out of 100, dropping to 39 in the last seven days. Insider activity has been largely positive, with five insider buys totaling $9.5 million in the last 90 days, most recently on August 26. Congressional activity includes recent buys and sells by Rep. Ro Khanna, with the most recent purchase on July 20. Despite these, the stock’s price trend over the past eight sessions has been sharply downward.

What To Watch

Boston Scientific has not scheduled any earnings reports in the immediate future. Investors should monitor the breadth of coverage and the outcome of the ongoing cybersecurity investigation, as well as any follow-up from analysts or regulatory bodies.

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.

BSX by the numbers

7 sessions: +6.47%Coverage: 21 stories / 12 sourcesAI sentiment: 41/100 (bearish)Mkt cap: $67.9BP/E: 19.052w: $42.20 to $109.50
BSX · today's session (5-min) · -11.90% vs prior close · updated 9:39 AM ET
$38.89$42.15$45.41prev close $45.06$39.707:00 AM7:38 AM8:17 AM8:56 AM9:35 AM7:00 AM · $43.457:05 AM · $43.547:10 AM · $43.507:15 AM · $43.257:20 AM · $42.917:25 AM · $42.487:30 AM · $42.597:35 AM · $42.527:40 AM · $42.407:45 AM · $42.387:50 AM · $42.377:55 AM · $42.458:00 AM · $43.208:05 AM · $39.578:10 AM · $39.758:15 AM · $40.008:20 AM · $39.308:25 AM · $39.238:30 AM · $39.508:35 AM · $39.528:40 AM · $39.708:45 AM · $39.858:50 AM · $40.458:55 AM · $40.259:00 AM · $40.899:05 AM · $40.809:10 AM · $40.779:15 AM · $41.009:20 AM · $41.539:25 AM · $41.859:30 AM · $40.839:35 AM · $39.70
AI sentiment, last 36h · averaged over 21 stories · 41/100 bearish
AI sentiment 41/100 (bearish)0 · bearish50bullish · 100

The headlines behind the move

Story flow · 10 stories on the wire, last 36h · hover or tap a dot for the headline
36h ago24h ago12h agonowGuruFocus · sentiment 42 · Is BSX Overvalued? DCF Says Worth $41GuruFocus · 42Is BSX Overvalued? DCF Says Worth $41Seeking Alpha · sentiment 34 · Boston Scientific drops after cutting 2026 outlook on cybersecurity incidentSeeking Alpha · 34Boston Scientific drops after cutting 2026 outlook on cybersecurity incidentBloomberg · sentiment 34 · Boston Scientific Falls on Sales Hit After August CyberattackBloomberg · 34Boston Scientific Falls on Sales Hit After August CyberattackGuruFocus · sentiment 63 · Boston Scientific (BSX) Q3 Earnings Beat Expectations Amid Mixed FY26 OutlookGuruFocus · 63Boston Scientific (BSX) Q3 Earnings Beat Expectations Amid Mixed FY26 OutlookSeeking Alpha · sentiment 58 · 4 stocks to watch on Wednesday: MSFT, BSX, V, and SKHYSeeking Alpha · 584 stocks to watch on Wednesday: MSFT, BSX, V, and SKHYInvesting.com Markets · sentiment 31 · Why is Boston Scientific stock plunging today?Investing.com Markets · 31Why is Boston Scientific stock plunging today?InvestorsHub · sentiment 34 · Boston Scientific Shares Fall 3.5% as Earnings Miss and Lower Guidance Offset Revenue GrowthInvestorsHub · 34Boston Scientific Shares Fall 3.5% as Earnings Miss and Lower Guidance Offset Revenue GrowthGuruFocus · sentiment 38 · Boston Scientific (BSX) Shares Slip Premarket Despite Q3 Beat, Full-Year Outlook CutGuruFocus · 38Boston Scientific (BSX) Shares Slip Premarket Despite Q3 Beat, Full-Year Outlook CutStocktwits News · sentiment 34 · BSX Stock Crashes To 4-Year Lows: Boston Scientific Sees Q4 Sales Declining, CEO Remains Confident In ‘Long-Term Strategy’Stocktwits News · 34BSX Stock Crashes To 4-Year Lows: Boston Scientific Sees Q4 Sales Declining, CEO Remains …GuruFocus · sentiment 34 · Boston Scientific (BSX) Lowers Sales Growth Forecast Amid ChallengesGuruFocus · 34Boston Scientific (BSX) Lowers Sales Growth Forecast Amid Challenges
1h agoGuruFocusBEARISH 34Earnings

Boston Scientific (BSX) Lowers Sales Growth Forecast Amid Challenges

2h agoStocktwits NewsBEARISH 34Earnings

BSX Stock Crashes To 4-Year Lows: Boston Scientific Sees Q4 Sales Declining, CEO Remains Confident In ‘Long-Term Strategy’

For full year 2026, Boston Scientific expects reported sales growth of about 4.25%, down from its previous forecast of 5.5% to 6.5%

3h agoGuruFocusBEARISH 38Earnings

Boston Scientific (BSX) Shares Slip Premarket Despite Q3 Beat, Full-Year Outlook Cut

3h agoInvestorsHubBEARISH 34Earnings

Boston Scientific Shares Fall 3.5% as Earnings Miss and Lower Guidance Offset Revenue Growth

Boston Scientific shares fall 3.48% after Q3 earnings miss forecasts and the company issues weaker fourth-quarter and full-year guidance despite revenue growth.

3h agoInvesting.com MarketsBEARISH 31General

Why is Boston Scientific stock plunging today?

Why is Boston Scientific stock plunging today?

4h agoSeeking AlphaBULLISH 58General

4 stocks to watch on Wednesday: MSFT, BSX, V, and SKHY

Market movers today: Microsoft earnings, SK Hynix profit surge, Visa outlook, and Boston Scientific cuts.

4h agoGuruFocusBULLISH 63Earnings

Boston Scientific (BSX) Q3 Earnings Beat Expectations Amid Mixed FY26 Outlook

4h agoBloombergBEARISH 34General

Boston Scientific Falls on Sales Hit After August Cyberattack

5h agoSeeking AlphaBEARISH 34Earnings

Boston Scientific drops after cutting 2026 outlook on cybersecurity incident

Boston Scientific (BSX) stock falls as the company, with its Q3 2026 results, cuts its outlook, citing impact from a recent cybersecurity incident. Read more here.

5h agoGuruFocusBEARISH 42Analyst

Is BSX Overvalued? DCF Says Worth $41

Frequently asked questions

Why is BSX stock moving today?

BOSTON SCIENTIFIC CO (BSX) is drawing unusual attention today. Our newswire has captured 21 stories on BSX across 12 sources in the last 36 hours, with AI sentiment reading bearish (avg 41/100). The most recent driver: "Boston Scientific (BSX) Lowers Sales Growth Forecast Amid Challenges" (GuruFocus).

Is BSX a buy right now?

Top Tier Newswire does not give financial advice. Our AI sentiment across the last 36 hours of BSX coverage reads 41/100 over 21 stories; treat it as a research signal and do your own diligence.

How fast does this page update?

The data sections refresh continuously as the newswire lands coverage; the written analysis is published once per trading day. Pro subscribers additionally get real-time push alerts, watchlists, and the full live terminal.

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

Earlier BSX move explainers: 2026-08-31 · 2026-08-28