CAXTON ASSOCIATES LP BSX — Boston Scientific Corp Com

Ownership history in CAXTON ASSOCIATES LP  ·  40 quarters on record

AI Ownership Summary

CAXTON ASSOCIATES LP reported Boston Scientific Corp Com (BSX) in 40 quarterly 13F filings from 2024 Q3 through 2024 Q4. Peak portfolio weight reached 2.2% in 2024 Q3. The latest visible filing shows BSX at 1.97% of the fund.

This page tracks quarterly shares, estimated market value, portfolio weight, filing dates, and disclosure-aligned stock prices directly from SEC EDGAR 13F filings. Older history is available after unlock; the visible window still shows the most recent pattern.

What this BSX ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was CAXTON ASSOCIATES LP's position in Boston Scientific Corp Com, and how did that conviction change over time? You can read the holding window, peak weight, latest reported size, disclosure timing, and quarter-by-quarter changes without piecing the story together from raw SEC rows.

Freshest filing
Latest Reported Filing
2024 Q4

BSX was reported at 1.97% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
2.2% in 2024 Q3

Peak weight helps separate a token disclosure from a real conviction holding the fund genuinely cared about.

Time in book
Holding Window
2024 Q3 to 2024 Q4

Longer holding windows often tell a very different story from short-lived tactical trades or one-quarter experiments.

Decision context
Why It Matters
Position size beats headlines

Knowing that a fund owned a stock is useful. Knowing whether it was a 0.20% placeholder or a true high-conviction position is where the signal actually starts.

BSX stock page CAXTON ASSOCIATES LP fund profile CAXTON ASSOCIATES LP full holdings
How CAXTON ASSOCIATES LP held BSX — position size vs. price
% of Fund (quarterly)    BSX price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 2 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2024 Q4 ADDED — — — 701,105 +1,105 +0.2% 1.97% $62.6M 2025-02-14 (Est.) $106.11
2024 Q3 ADDED — — — 700,000 +650,000 +1300.0% 2.20% $58.7M 2024-11-14 $87.59
38 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding BSX

As of 2026 Q1 — sorted by position size

Bollard Group LLC 3Y 7Y 34.26% Bancreek Capital Management, LP 3Y 10.59% Prosight Management, LP 3Y 7Y 8.19% DKRT Investments Corp. 6.92% ECOFI INVESTISSEMENTS SA 5.71% Rhenman & Partners Asset Management AB 3Y 7Y 4.84% Catalio Capital Management, LP 3.92% STONERIDGE INVESTMENT PARTNERS LLC 3Y 7Y 3.76% Ilex Capital Partners (UK) LLP 3.45% Eagle Health Investments LP 3Y 3.22%

FAQ About CAXTON ASSOCIATES LP and BSX

These are the practical questions this page is built to answer before you even open the full history table.

How long has CAXTON ASSOCIATES LP reported owning BSX?

CAXTON ASSOCIATES LP reported BSX across 2 quarterly 13F filings, from 2024 Q3 through 2024 Q4.

What was the largest reported BSX position in CAXTON ASSOCIATES LP's portfolio?

The largest reported portfolio weight for BSX was 2.20% in 2024 Q3.

What is the latest reported BSX position on this page?

The most recent filing on this page is 2024 Q4, when CAXTON ASSOCIATES LP reported 701,105 shares, equal to 1.97% of portfolio, with an estimated market value of $62.6M.

What does the chart on this BSX ownership page compare?

The chart compares CAXTON ASSOCIATES LP's quarterly BSX portfolio weight with the stock's indexed share price, so you can see whether the fund was building, trimming, or holding the position as price moved.

How well did CAXTON ASSOCIATES LP time their BSX position?

Based on 13F filing dates vs. subsequent BSX price moves, CAXTON ASSOCIATES LP correctly timed 14 out of 38 reported position changes (37%). The annualised alpha on BSX relative to SPY over the holding period was -8.9%.

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