BSX monthly performance report
Monthly BSX research: returns, drawdown, relative strength, seasonality, and key stats.
BSX monthly report
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Key takeaways
- Boston Scientific (BSX) closed September 2026 at $45.05, down 6.73% for the month and −56.14% over the trailing 12 months.
- Year-to-date, BSX is −52.75%, underperforming the S&P 500 which has returned +11.58% YTD.
- The stock is trading −32.12% versus its 200-day moving average ($66.37), a cautious technical signal.
- Over the past three years, BSX has underperformed the S&P 500 by −83.82%, with a relative strength index reading of 50.4.
- Win rate over the trailing 39 months stands at 59% — 23 positive months versus 16 negative months.
Boston Scientific ended September 2026 at $45.05, posting a monthly return of −6.73%. The S&P 500 returned −0.80% over the same window, leaving relative performance at −5.92%.
The current quarter stands at +5.55% (Q3 2026 (QTD)), while medium-term trend remains soft: price is −32.12% versus the 200-day moving average ($66.37).
Year-to-date, BSX is −52.75% against SPY +11.58%, a gap of −64.33%. The stock is currently −58.86% below its 52-week high, with maximum 3-year drawdown at −60.58%.
| Period | BSX | S&P 500 (SPY) | Excess return |
|---|---|---|---|
| 1 Day | +4.82% | −0.45% | +5.26% |
| 1 Week | −5.75% | −1.21% | −4.54% |
| 1 Month | −6.73% | −0.80% | −5.92% |
| 3 Months | −6.81% | +3.13% | −9.94% |
| 6 Months | −37.34% | +12.36% | −49.70% |
| YTD | −52.75% | +11.58% | −64.33% |
| 12 Months | −56.14% | +15.74% | −71.88% |
| 3 Years | −14.87% | +68.95% | −83.82% |
| 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 | Apr 2026 | −8.19% |
| 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) | +5.55% |
| Year | Return |
|---|---|
| 2023 | +24.94% |
| 2024 | +54.51% |
| 2025 | +6.75% |
| 2026 | −52.75% |
| Metric | Value |
|---|---|
| 52-Week High | $109.50 (2025-09-09) |
| 52-Week Low | $42.20 (2026-07-15) |
| Current Price | $45.05 |
| 200-Day Moving Average | $66.37 |
| Price vs 200DMA | −32.12% |
| 3-Year Maximum Drawdown | −60.58% (2026-07-14) |
| Current Drawdown from 52W High | −58.86% |
| RS metric | Value |
|---|---|
| RS Index (3-year, rebased to 100) | 50.4 |
| 3-Year Excess Return vs S&P 500 | −83.82% |
| RS Peak | 158.9 (May 2025) |
| RS Trough | 47.9 (Sep 2026) |
| Status | Underperforming Benchmark |
Frequently asked questions
What was BSX's return for this report period?
BSX returned −6.73% in the latest monthly window ending 2026-09-14.
Has BSX outperformed SPY year to date?
YTD BSX: −52.75% vs SPY: +11.58%.
What is BSX's 12-month return?
−56.14% over the trailing 12 months.
Is BSX above or below its 200-day moving average?
Price is −32.12% versus 200DMA ($66.37).
What is the maximum drawdown in the 3-year window?
−60.58% on 2026-07-14.