ADVENT CAPITAL MANAGEMENT /DE/ STRK — MICROSTRATEGY INC

Ownership history in ADVENT CAPITAL MANAGEMENT /DE/  ·  5 quarters on record

AI Ownership Summary

ADVENT CAPITAL MANAGEMENT /DE/ reported MICROSTRATEGY INC (STRK) in 5 quarterly 13F filings from 2025 Q1 through 2026 Q1. Peak portfolio weight reached 0.19% in 2026 Q1. The latest visible filing shows STRK at 0.19% 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 STRK ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was ADVENT CAPITAL MANAGEMENT /DE/'s position in MICROSTRATEGY INC, 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
2026 Q1

STRK was reported at 0.19% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
0.19% in 2026 Q1

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

Time in book
Holding Window
2025 Q1 to 2026 Q1

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.

STRK stock page ADVENT CAPITAL MANAGEMENT /DE/ fund profile ADVENT CAPITAL MANAGEMENT /DE/ full holdings
How ADVENT CAPITAL MANAGEMENT /DE/ held STRK — position size vs. price
% of Fund (quarterly)    STRK price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 5 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2026 Q1 REDUCED — — — 97,805 -7,933 -7.5% 0.19% $7.0M 2026-05-07 $79.00
2025 Q4 ADDED — — — 105,738 +12,500 +13.4% 0.17% $8.4M 2026-02-09 $74.82
2025 Q3 ADDED — — — 93,238 +53,420 +134.2% 0.19% $8.53B 2025-11-13 $77.03
2025 Q2 ADDED — — — 39,818 +4,000 +11.2% 0.10% $4.82B 2025-08-13 $99.80
2025 Q1 INITIATED — — — 35,818 — — 0.07% $3.00B 2025-05-12 $86.37

🏢 Other funds also holding STRK

As of 2026 Q1 — sorted by position size

Aspiring Ventures, LLC 1.75% Andina Capital Management, LLC 1.4% Kovack Advisors, Inc. 3Y 7Y 0.77% Ground Swell Capital, LLC 3Y 7Y 0.48% Pasadena Private Wealth, LLC 3Y 7Y 0.35% Ewing Morris & Co. Investment Partners Ltd. 3Y 0.34% Ulland Investment Advisors, LLC 3Y 0.25% Exit Wealth Advisors, LLC. 0.11% Calamos Advisors LLC 3Y 7Y 0.05% WEDBUSH SECURITIES INC 3Y 7Y 0.03%

FAQ About ADVENT CAPITAL MANAGEMENT /DE/ and STRK

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

How long has ADVENT CAPITAL MANAGEMENT /DE/ reported owning STRK?

ADVENT CAPITAL MANAGEMENT /DE/ reported STRK across 5 quarterly 13F filings, from 2025 Q1 through 2026 Q1.

What was the largest reported STRK position in ADVENT CAPITAL MANAGEMENT /DE/'s portfolio?

The largest reported portfolio weight for STRK was 0.19% in 2026 Q1.

What is the latest reported STRK position on this page?

The most recent filing on this page is 2026 Q1, when ADVENT CAPITAL MANAGEMENT /DE/ reported 97,805 shares, equal to 0.19% of portfolio, with an estimated market value of $7.0M.

What does the chart on this STRK ownership page compare?

The chart compares ADVENT CAPITAL MANAGEMENT /DE/'s quarterly STRK 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 ADVENT CAPITAL MANAGEMENT /DE/ time their STRK position?

Based on 13F filing dates vs. subsequent STRK price moves, ADVENT CAPITAL MANAGEMENT /DE/ correctly timed 2 out of 4 reported position changes (50%). The annualised alpha on STRK relative to SPY over the holding period was -28.3%.

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