Why Boston Scientific Corporation (BSX) stock moved
Updated Aug 20, 2026
Boston Scientific Corporation (BSX) shares tumbled 5.1% to $49.37 as of August 20, 2026, a significant decline from the prior close of $52.01. BestStocks flagged the session as a major change for BSX. Below, we break down what changed for BSX, why it matters for investors, how the stock reacted, and the catalysts on the calendar.
What happened
BSX fell 5.1% to $49.37
BSX tumbled 5.1% in its latest session, moving from $52.01 to $49.37.
ValuationLow confidence
Rel. volume
1.0×
Normal
Vs peers
—
No comparable peers
Market cap
$73.4B
New York Stock Exchange
Analyst target
$67
+34.7% vs price
Price chart
Jul 20 – Aug 20
E earnings
F filing
A analyst
V/N other
click a marker to highlight
Change events — click to jump to details
What it means for Boston Scientific Corporation investors
For Boston Scientific Corporation investors, the recent signals add up to a bearish shift. On the constructive side: Positive price momentum; Boston Scientific Corporation (BSX) moved +3.67% from $43.04 to $44.62 on 2026-07-16. Weighing against that: Material negative event; Sharp 5.1% decline — elevated risk. Wall Street's consensus price target sits at $66.50, implying +34.7% upside from $49.37. Over the past 90 days analysts logged 0 upgrades and 3 downgrades. BestStocks rates the overall signal quality low (58/100). With earnings roughly 69 days out, the next report is the most likely near-term test of the move.
BSX price reaction
BSX last traded at $49.37, down $2.64 (-5.08%) from the previous close of $52.01. The session traded on 1.0× average volume (normal), so participation was unremarkable. Over the past month the stock has ranged between $42.97 and $52.01, and it currently sits about 71% of the way up that band.
Bullish and bearish analyst opinions on Boston Scientific Corporation (BSX)
The consensus analyst price target on Boston Scientific Corporation (BSX) is $66.50, 34.7% above the recent $49.37. Over the past 90 days analysts logged 0 upgrades, 24 maintains, and 3 downgrades. Here is how the bullish and bearish cases on BSX line up.
▲ The bullish case
+Wall Street's consensus price target of $66.50 implies +34.7% upside from $49.37.
+The Street's most bullish target is $100.00 (+102.6%).
+Positive price momentum.
+Boston Scientific Corporation (BSX) moved +3.67% from $43.04 to $44.62 on 2026-07-16.
▼ The bearish case
−3 analyst downgrades in the past 90 days, most recently Argus Research to Hold (2026-07-31).
−Material negative event.
−Sharp 5.1% decline — elevated risk.
−Boston Scientific Corporation (BSX) moved -4.52% from $44.65 to $42.63 on 2026-07-14.
Bull vs bear balanceBearish Shift
BearishNeutralBullish
Weighing both sides, BestStocks' composite read of recent signals is bearish, as the bull-versus-bear meter above shows. This is an educational summary of the bull and bear case, not investment advice.
Analyst price targets and ratings are FMP consensus figures as of Aug 20, 2026; other aggregators may differ. High and low targets show the range of estimates, not forecasts.
Boston Scientific Corporation (BSX) moved -4.40% from $51.64 to $49.37 on 2026-08-20. We checked news, earnings announcements, analyst updates, SEC filings, and corporate actions — no company-specific catalyst was found. Volume was near its 5-day average, suggesting the decline was not driven by unusual trading activity.
Material / Earnings2026-08-18-1.9%
Boston Scientific Corporation (BSX) moved -3.65% from $52.38 to $50.47 on 2026-08-18. We checked news, earnings announcements, analyst updates, SEC filings, and corporate actions — no company-specific catalyst was found. Volume was near its 5-day average, suggesting the decline occurred without unusual trading activity.
Boston Scientific shares rose 2.28% to $52.87, extending a technical recovery from a steep summer sell-off as investors rotate back into healthcare and medical device names amid easing macroeconomic concerns. The move is supported by relief buying following the prior sharp decline from lowered full-year organic growth guidance (5%–6%), as well as insider purchasing confidence signaling value at compressed valuations, per web sources cited by Yahoo Finance.
Boston Scientific rebounded +2.16% to $50.38 following a stabilization phase after Q2 earnings beat ($5.44B revenue) that offset guidance cut concerns, according to Yahoo Finance reporting. Volume of 5.99M shares runs 1.32x expected for this time of trading.
Boston Scientific Corporation moved +4.56% intraday from $47.74 to $49.91. Boston Scientific (BSX ) shares are trading up slightly as the stock attempts to stabilize and recover some ground following a sharp post-earnings selloff and recent heavy pressure tied to lowered full-year guidance and slowing demand for its WATCHMAN device franchise. Market Context - Guidance Pressures: The stock previously absorbed heavy losses after management trimmed organic growth and EPS forecasts for the year. - Bouncing Off Lows: Value-focused buying and technical stabilization have helped the stock claw back minor ground near its recent lows. If you'd like, I can provide: - Recent analyst price targets and ratings - Details on the WATCHMAN franchise performance - A breakdown of their latest Q2 financial metrics
Material / Earnings2026-08-05-2.8%
Boston Scientific Corporation (BSX) moved -3.50% from $49.47 to $47.74 on 2026-08-05. We checked news, earnings announcements, analyst updates, SEC filings, and corporate actions — no company-specific catalyst was found. Volume traded near its 5-day average, suggesting the decline occurred on ordinary trading activity.
Material / Earnings2026-08-04+1.4%
Boston Scientific Corporation (BSX) moved +2.04% from $48.11 to $49.09 on 2026-08-04. We checked news, earnings announcements, analyst updates, SEC filings, and corporate actions — no company-specific catalyst was found. The move coincided with BSX reaching a new 30-day high, though volume remained near its 5-day average.
Filings2026-08-03+3.6%
Boston Scientific Corporation (BSX) filed its 10-Q on August 3, 2026, covering the second quarter of 2026. The filing is now available for review on the SEC's EDGAR database.
Upcoming catalysts & outlook
Next earnings
2026-10-28 (est.)
in 69 days
10-Q Filing (est.)
2026-11-02
Medium impact
Thesis shift
Bearish Shift
bearish signal
Risk level
Low
from change events
Frequently asked questions about BSX
Why did Boston Scientific Corporation (BSX) stock move?
BSX tumbled 5.1% to $49.37. No single company-specific catalyst was confirmed during the move window, and it looks technical.
How much did BSX stock fall?
BSX lost 5.08% ($2.64) versus the prior close of $52.01, last trading at $49.37 on 1.0× average volume.
When is Boston Scientific Corporation's next earnings date?
BSX's next earnings report is estimated for 2026-10-28 — about 69 days away.
What is the analyst price target for BSX?
The consensus analyst price target for BSX is $66.50, about 34.7% above the current $49.37. Over the past 90 days, analysts recorded 0 upgrades, 24 maintains, and 3 downgrades.
How BestStocks tracks BSX
This page is generated automatically by BestStocks' change-detection system after its price and volume cleared BSX-specific materiality thresholds, triggering an evidence check. It draws on 20 tracked change events for BSX, cross-checked against the data sources listed below. Price, volume, and market-capitalization figures are the live intraday quote as of August 20, 2026 and refresh as new information is detected; for companies with multiple share classes, market-cap figures can differ by data source. Analyst price targets and ratings are FMP consensus. This is an educational summary of what changed and why — not personalized investment advice.
