BSX monthly performance report
Check BSX's monthly returns, drawdown, and seasonality trends — updated every month.
BSX monthly report
—
Key takeaways
- Boston Scientific (BSX) closed September 2026 at $43.91, down 9.09% for the month and −55.64% over the trailing 12 months.
- Year-to-date, BSX is −53.95%, underperforming the S&P 500 which has returned +10.58% YTD.
- The stock is trading −33.31% versus its 200-day moving average ($65.84), a cautious technical signal.
- Over the past three years, BSX has underperformed the S&P 500 by −87.07%, with a relative strength index reading of 48.7.
- Win rate over the trailing 39 months stands at 59% — 23 positive months versus 16 negative months.
Boston Scientific ended September 2026 at $43.91, posting a monthly return of −9.09%. The S&P 500 returned −1.69% over the same window, leaving relative performance at −7.39%.
The current quarter stands at +2.88% (Q3 2026 (QTD)), while medium-term trend remains soft: price is −33.31% versus the 200-day moving average ($65.84).
Year-to-date, BSX is −53.95% against SPY +10.58%, a gap of −64.53%. The stock is currently −59.37% below its 52-week high, with maximum 3-year drawdown at −60.58%.
| Period | BSX | S&P 500 (SPY) | Excess return |
|---|---|---|---|
| 1 Day | +0.09% | −0.44% | +0.53% |
| 1 Week | −2.34% | −1.10% | −1.24% |
| 1 Month | −9.09% | −1.69% | −7.39% |
| 3 Months | −6.40% | −0.10% | −6.29% |
| 6 Months | −36.94% | +13.21% | −50.15% |
| YTD | −53.95% | +10.58% | −64.53% |
| 12 Months | −55.64% | +14.25% | −69.89% |
| 3 Years | −16.99% | +70.07% | −87.07% |
| Rank | Month | Return |
|---|---|---|
| #1 | Jan 2025 | +14.60% |
| #2 | Aug 2024 | +10.71% |
| #3 | Jul 2026 | +9.49% |
| #4 | Jan 2024 | +9.43% |
| #5 | Nov 2023 | +9.18% |
| Rank | Month | Return |
|---|---|---|
| #1 | Mar 2026 | −18.35% |
| #2 | Feb 2026 | −17.83% |
| #3 | May 2026 | −16.14% |
| #4 | Jun 2026 | −11.65% |
| #5 | Sep 2026 | −9.09% |
| Quarter | Return |
|---|---|
| Q2 2025 | +6.47% |
| Q3 2025 | −9.11% |
| Q4 2025 | −2.34% |
| Q1 2026 | −34.19% |
| Q2 2026 | −31.98% |
| Q3 2026 (QTD) | +2.88% |
| Year | Return |
|---|---|
| 2023 | +24.94% |
| 2024 | +54.51% |
| 2025 | +6.75% |
| 2026 | −53.95% |
| Metric | Value |
|---|---|
| 52-Week High | $108.07 (2025-09-10) |
| 52-Week Low | $42.20 (2026-07-15) |
| Current Price | $43.91 |
| 200-Day Moving Average | $65.84 |
| Price vs 200DMA | −33.31% |
| 3-Year Maximum Drawdown | −60.58% (2026-07-14) |
| Current Drawdown from 52W High | −59.37% |
| RS metric | Value |
|---|---|
| RS Index (3-year, rebased to 100) | 48.7 |
| 3-Year Excess Return vs S&P 500 | −87.07% |
| RS Peak | 156.3 (May 2025) |
| RS Trough | 47.1 (Sep 2026) |
| Status | Underperforming Benchmark |
Frequently asked questions
What was BSX's return for this report period?
BSX returned −9.09% in the latest monthly window ending 2026-09-16.
Has BSX outperformed SPY year to date?
YTD BSX: −53.95% vs SPY: +10.58%.
What is BSX's 12-month return?
−55.64% over the trailing 12 months.
Is BSX above or below its 200-day moving average?
Price is −33.31% versus 200DMA ($65.84).
What is the maximum drawdown in the 3-year window?
−60.58% on 2026-07-14.