FOSTER DYKEMA CABOT & PARTNERS, LLC SPY SPDR S&P 500 ETF Trust

Ownership history in FOSTER DYKEMA CABOT & PARTNERS, LLC  ·  9 quarters on record

AI Ownership Summary

FOSTER DYKEMA CABOT & PARTNERS, LLC reported SPDR S&P 500 ETF Trust (SPY) in 9 quarterly 13F filings from 2023 Q4 through 2025 Q4. Peak portfolio weight reached 21.35% in 2023 Q4. The latest visible filing shows SPY at 17.56% 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.

What this SPY ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was FOSTER DYKEMA CABOT & PARTNERS, LLC's position in SPDR S&P 500 ETF Trust, 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
2025 Q4

SPY was reported at 17.56% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
21.35% in 2023 Q4

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

Time in book
Holding Window
2023 Q4 to 2025 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.

How FOSTER DYKEMA CABOT & PARTNERS, LLC held SPY — position size vs. price
% of Fund (quarterly)    SPY price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 9 quarters  
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2025 Q4 REDUCED 417,814 -1,168 -0.3% 17.56% $285.7M 2026-02-14 (Est.) $679.89
2025 Q3 ADDED 418,982 +854 +0.2% 18.36% $279.9M 2025-11-12 $679.51
2025 Q2 REDUCED 418,128 -1,702 -0.4% 18.22% $259.1M 2025-08-12 $637.28
2025 Q1 REDUCED 419,830 -394 -0.1% 18.90% $235.6M 2025-05-09 $557.94
2024 Q4 ADDED 420,224 +2,142 +0.5% 19.26% $247.1M 2025-02-13 $601.01
2024 Q3 ADDED 418,082 +2,123 +0.5% 20.19% $240.6M 2024-11-12 $586.39
2024 Q2 ADDED 415,959 +3,694 +0.9% 20.31% $227.1M 2024-08-14 $532.54
2024 Q1 REDUCED 412,265 -9,988 -2.4% 20.14% $216.3M 2024-05-10 $508.47
2023 Q4 INITIATED 422,253 21.35% $201.5M 2024-02-14 $485.22

FAQ About FOSTER DYKEMA CABOT & PARTNERS, LLC and SPY

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

How long has FOSTER DYKEMA CABOT & PARTNERS, LLC reported owning SPY?

FOSTER DYKEMA CABOT & PARTNERS, LLC reported SPY across 9 quarterly 13F filings, from 2023 Q4 through 2025 Q4.

What was the largest reported SPY position in FOSTER DYKEMA CABOT & PARTNERS, LLC's portfolio?

The largest reported portfolio weight for SPY was 21.35% in 2023 Q4.

What is the latest reported SPY position on this page?

The most recent filing on this page is 2025 Q4, when FOSTER DYKEMA CABOT & PARTNERS, LLC reported 417,814 shares, equal to 17.56% of portfolio, with an estimated market value of $285.7M.

What does the chart on this SPY ownership page compare?

The chart compares FOSTER DYKEMA CABOT & PARTNERS, LLC's quarterly SPY 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 FOSTER DYKEMA CABOT & PARTNERS, LLC time their SPY position?

Based on 13F filing dates vs. subsequent SPY price moves, FOSTER DYKEMA CABOT & PARTNERS, LLC correctly timed 4 out of 8 reported position changes (50%). The annualised alpha on SPY relative to SPY over the holding period was +0.0%.

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