Stock Analysis
Data Source: SEC EDGAR 13F
Updated Hourly

Boston Scientific Corp (BSX)

2K + Investors. Track Smart Money conviction in BSX. See who's accumulating, reducing, or initiating positions.

Current Price
-- USD
Analyst Target
-- (0 analysts)
Upside
0.00%
Net Flow Q/Q
↓ -102
Streak
1Q ▼
Buyers last Q
48%

Smart Money Signals — BSX

Based on 1661 hedge funds · latest filing: 2026 Q1 · updated quarterly

📉

Selling streak — 1 quarter in a row

last 6Q
For 1 consecutive quarter, more hedge funds reduced or closed their BSX positions than added to them. Sustained institutional selling is a meaningful warning sign — these are professionals with deep research teams collectively deciding to exit.
📊

High ownership — 94% of 3.0Y peak

94% of all-time peak
1,661 funds currently hold this stock — 94% of the 3.0-year high of 1,763 funds (reached 2025 Q4). Ownership is elevated but not yet at maximum concentration. Room to grow, but watch if the trend reverses.
〰️

Stable — ownership unchanged year-over-year

fund count last 6Q
The number of hedge funds holding BSX is almost the same as a year ago (+55 funds, +3% change). No significant rush to buy or sell — institutional backing is holding steady.
🟠

More sellers than buyers — 48% buying

883 buying965 selling
Last quarter: 965 funds reduced or exited vs 883 that bought or added. When more than half of active funds are selling, it's a caution flag — especially if the stock price hasn't moved down yet.
⚠️

Fewer new buyers each quarter (-28 vs last Q)

new funds entering per quarter
Funds opening this position for the first time: 165 → 188 → 238 → 210. Each quarter fewer new institutions are entering. This usually means most funds that wanted in are already in — the stock is well-known but the pool of potential new buyers is shrinking.
🔒

59% of holders stayed for 2+ years

■ 59% conviction (2yr+) ■ 21% medium ■ 20% new
985 out of 1,661 hedge funds have held BSX for over 2 years without selling. Long-term investors are generally harder to shake out during market stress, creating a stable ownership base that limits the risk of sudden capitulation.
💎

Buying through price weakness — shares -3%, value -38%

Value
-37%
Shares
-2%
Last quarter: funds added -3% more shares while total portfolio value only changed -38%. Institutions were buying while the price was falling — a high-conviction accumulation signal. They're deliberately loading up on the dip.
📈

Growing discovery — still being found

240 → 165 → 188 → 238 → 210 new funds/Q
New funds entering each quarter: 165 → 188 → 238 → 210. A growing number of institutions are discovering BSX each quarter. The narrative is still spreading — leaving room for ongoing capital accumulation.
🏛️

Veteran-anchored — 63% veterans vs 23% newcomers

■ 63% veterans ■ 13% 1-2yr ■ 23% new
Entry-cohort mix of 1,746 holders: 1,108 (63%) are 2+ year veterans, 233 entered 1–2 years ago, and 405 (23%) joined within the past year. A veteran-weighted cap table skews toward institutional memory over fresh momentum.
🏆

Elite ownership — 50% AUM from top-100 funds

50% from top-100 AUM funds
70 of 1655 holders are among the 100 largest funds by AUM, controlling 50% of total institutional value in BSX. When the biggest players dominate the cap table, it signifies deep institutional support — since mega-funds deploy the most rigorous due diligence and capital.
3.4
out of 10
Low Exit Risk
Exit risk score 3.4/10 — low institutional crowding. Ownership is below peak levels, holder base is relatively sticky, and buying momentum is positive.

Methodology note: these Smart Money cards use consecutive 13F disclosure snapshots, not trade-by-trade execution data. "Buying", "selling", "new holders", and "trimmed" refer to quarter-over-quarter changes in reported holders, aggregate shares, or disclosed position values between filings. They are useful for ownership regime analysis and crowding, but they do not imply exact trade timing on the filing date.

Institutional Sentiment Summary — BSX

In 2026 Q1, 883 hedge funds were net buyers of BSX (210 opened a new position, 673 added to an existing one), while 965 reduced or exited (653 trimmed, 312 sold completely) — a 48% buyer ratio, indicating roughly balanced activity. 50% of total institutional value in BSX is held by top-100 AUM funds, reflecting elite-tier ownership quality. Net fund flow last quarter: -102 funds (more exits than new entries). Total institutional holders: 1661.

Hedge Fund Ownership: BSX

How many hedge funds hold BSX — quarterly history vs. share price
Quarterly hedge fund ownership of BSX vs. share price

Market Analysis: BSX

Analyst Price Targets

Avg. Price Target
--

Analyst Recommendations

Stock Performance

Real-time

Company Profile: BSX

-- --

Institutional ownership data sourced from SEC EDGAR Form 13F-HR filings.

Is It Too Late to Buy Boston Scientific Corp (BSX) Based on Hedge Fund 13F Filings?

Signal Freshness measures how much BSX has moved relative to its sector benchmark (XLV) since the 2026 Q1 13F filing. A stock that has barely outrun its sector is still a relatively fresh entry point — the fund's thesis has not yet been priced in by the broader market.

Since Quarter End March 31, 2026 · 79d ago
BSX
-27.8%
XLV
+2.1%

BSX outperformed XLV by -29.9% since March 31, 2026.

Since 13F Filing Date May 15, 2026 · 34d ago
BSX
-14.0%
XLV
+3.2%

Since the filing became public, BSX outperformed XLV by -17.2% .

Interpretation: The stock is tracking its sector benchmark closely. The signal remains fresh and the entry point is still near the fund's implied reference. Learn more →

Smart Money Signal ?
Broad Consensus, Selective Conviction

Many quality funds hold this stock, but top-tier positions remain relatively small.

95 top-rated funds 23 high-conviction
Consensus
8.6
/ 10
breadth
×
Elite
3.9
/ 10
conviction
Hedge Fund Positioning: BSX
2K + Investors

Track Smart Money conviction in BSX. See who's accumulating, reducing, or initiating positions.

Metric All 13F Filers (2026 Q1) Prior (2025 Q4) Change
Funds Holding 1645 1763 -6.69%
13F Shares 1.33B 1.38B -3.1%
Total Value $81.04B $130.12B -37.72%
New Positions 203 238 -35
Increased Positions 660 656 +4
Closed Positions 321 152 +169
Reduced Positions 618 678 -60
Total Calls 53 35 51.43%
Total Puts 38 34 11.76%
PUT/CALL Ratio 0.72 0.97 Neutral

Statistics: BSX

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Valuation Measures Data as of: --

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PEG Ratio (5yr expected) --
Price/Sales (ttm) --
Price/Book (mrq) --
Enterprise Value/Revenue --
Enterprise Value/EBITDA --
Beta (5Y Monthly) --
Short Ratio (Days to Cover) --
Short % of Float --

Financial Highlights

Profitability
Profit Margin --
Return on Assets (ttm) --
Return on Equity (ttm) --
Income Statement & Cash Flow
Revenue (ttm) --
Net Income Avi to Common (ttm) --
Diluted EPS (ttm) --
Total Cash (mrq) --
Total Debt/Equity (mrq) --
Levered Free Cash Flow (ttm) --

Institutional Holders (2026 Q1)

2K + investors

Explore institutional interest and hedge fund ownership dynamics. Analyze portfolio weights, new positions, and conviction trends in BSX. Verified SEC 13F-HR filings.

QUARTER:
Top 25 BSX holders by conviction (% of portfolio weight) — 2026 Q1 · Source: SEC Form 13F
# Investor % of Portfolio Shares Mkt Value
1 Bancreek Capital Management, LP 10.59% 39,000 $2.4M
2 Prosight Management, LP 8.19% 795,547 $49.9M
3 DKRT Investments Corp. 6.92% 435,000 $27.3M
4 Ecofi Investissements SA 5.71% 50,000 $3.1M
5 Rhenman & Partners Asset Management AB 4.84% 625,000 $39.2M
6 Catalio Capital Management, LP 3.92% 299,318 $18.8M
7 Ilex Capital Partners (UK) LLP 3.45% 2,234,180 $140.2M
8 Eagle Health Investments LP 3.22% 293,152 $18.4M
9 Edgewood Management LLC 3.09% 7,629,399 $478.7M
10 BlueSpruce Investments, LP 3.04% 306,134 $19.2M
11 Maverick Capital Ltd 3.04% 4,195,089 $263.2M
12 Orbimed Advisors LLC 2.96% 2,382,100 $149.5M
13 EDENTREE ASSET MANAGEMENT Ltd 2.96% 156,600 $9.8M
14 Milford Funds Ltd 2.91% 2,210,221 $138.7M
15 Parkman Healthcare Partners LLC 2.90% 448,768 $28.2M
16 Compass Capital Management, Inc 2.69% 710,874 $44.6M
17 Farallon Capital Management LLC 2.67% 7,470,684 $468.8M
18 Saranac Partners Ltd 2.65% 95,541 $6.2M
19 Castlefield Investment Partners LLP 2.58% 53,861 $3.4M
20 Navera Investment Management Ltd. 2.50% 1,558,014 $97.7M
21 BSN Capital Partners Ltd 2.36% 500,000 $50.1M
22 Financial Perspectives, Inc 2.36% 134,570 $8.4M
23 Longaeva Partners L.P. 2.22% 957,306 $60.1M
24 Bellevue Group AG 2.19% 1,466,894 $92.0M
25 Encore Global Management, LP 2.04% 46,500 $2.9M
Investor Ownership
History 		% of Portfolio Prev % Rank Conviction Avg Buy Price 13F Score™ 3Y / 7Y Sell Timing Shares Mkt Value Change Change % Source Quarter Filed

Frequently Asked Questions — Boston Scientific Corp (BSX)

What does the Smart Money Trend signal show for BSX?

Selling streak — 1 quarter in a row: For 1 consecutive quarter, more hedge funds reduced or closed their BSX positions than added to them. Sustained institutional selling is a meaningful warning sign — these are professionals with deep research teams collectively deciding to exit.

What is the institutional breadth score for BSX?

More sellers than buyers — 48% buying: Last quarter: 965 funds reduced or exited vs 883 that bought or added. When more than half of active funds are selling, it's a caution flag — especially if the stock price hasn't moved down yet.

What is the fund quality score for BSX holders?

Elite ownership — 50% AUM from top-100 funds: 70 of 1655 holders are among the 100 largest funds by AUM, controlling 50% of total institutional value in BSX. When the biggest players dominate the cap table, it signifies deep institutional support — since mega-funds deploy the most rigorous due diligence and capital.

How long have hedge funds held BSX?

59% of holders stayed for 2+ years: 985 out of 1,661 hedge funds have held BSX for over 2 years without selling. Long-term investors are generally harder to shake out during market stress, creating a stable ownership base that limits the risk of sudden capitulation.

Is it too late to buy Boston Scientific Corp (BSX) following the 2026 Q1 hedge fund 13F filings?

As of today, BSX has moved -14.0% since the 2026 Q1 13F filing date (May 15, 2026), compared to +3.2% for the XLV sector ETF — an outperformance of -17.2%. Since the quarter end (March 31, 2026), BSX has gained -27.8% vs +2.1% for XLV. The stock is tracking its sector benchmark closely. The signal remains fresh and the entry point is still near the fund's implied reference.

Where does this institutional ownership data come from?

All holdings data is sourced from SEC Form 13F filings, which institutional investment managers with over $100 million in assets are required to submit quarterly. Data is parsed directly from SEC EDGAR.

Disclaimer: The information on this page is for informational purposes only and does not constitute investment advice, a recommendation, or an offer to buy or sell any security. Institutional holdings data is sourced from SEC Form 13F filings and reflects positions as of the filing date. Past performance of any fund or portfolio is not indicative of future results. 13Foresight is not a registered investment adviser. Always conduct your own due diligence before making investment decisions.

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