Alberta Investment Management Corp LBRDK — LIBERTY BROADBAND CORP

Ownership history in Alberta Investment Management Corp  ·  22 quarters on record

AI Ownership Summary

Alberta Investment Management Corp reported LIBERTY BROADBAND CORP (LBRDK) in 22 quarterly 13F filings from 2023 Q4 through 2026 Q1. Peak portfolio weight reached 0.2% in 2025 Q1. The latest visible filing shows LBRDK at 0.08% 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 LBRDK ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was Alberta Investment Management Corp's position in LIBERTY BROADBAND CORP, 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

LBRDK was reported at 0.08% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
0.2% in 2025 Q1

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 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.

LBRDK stock page Alberta Investment Management Corp fund profile Alberta Investment Management Corp full holdings
How Alberta Investment Management Corp held LBRDK — position size vs. price
% of Fund (quarterly)    LBRDK price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 10 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2026 Q1 UNCHANGED — — — 270,000 — 0% 0.08% $13.6M 2026-04-29 $36.96
2025 Q4 UNCHANGED — — — 270,000 — 0% 0.04% $13.1M 2026-02-17 $55.09
2025 Q3 ADDED — — — 270,000 +149,900 +124.8% 0.17% $17.2M 2025-11-07 $50.73
2025 Q2 REDUCED 64.7% -31.1% ✅ 120,100 -220,000 -64.7% 0.13% $11.8M 2025-08-08 $58.30
2025 Q1 UNCHANGED — — — 340,100 — 0% 0.20% $28.9M 2025-05-08 $87.64
2024 Q4 ADDED — — — 340,100 +182,900 +116.3% 0.17% $25.4M 2025-02-03 $71.23
2024 Q3 ADDED — — — 157,200 +70,000 +80.3% 0.10% $12.1M 2024-11-05 $87.32
2024 Q2 REDUCED — — — 87,200 -1,600 -1.8% 0.05% $4.8M 2024-08-13 $59.42
2024 Q1 UNCHANGED — — — 88,800 — 0% 0.05% $5.1M 2024-05-15 $49.34
2023 Q4 ADDED — — — 88,800 +65,887 +287.6% 0.07% $7.2M 2024-02-12 $58.12
12 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding LBRDK

As of 2026 Q1 — sorted by position size

Hi-Line Capital Management, LLC 3Y 5.32% ALPINE ASSOCIATES MANAGEMENT INC. 3Y 7Y 1.4% LB Partners LLC 0.82% Carnegie Lake Advisors LLC 0.26% Oak Thistle LLC 3Y 0.2% Assenagon Asset Management S.A. 3Y 7Y 0.17% Citadel Investment Advisory, Inc. 3Y 0.08% Chemistry Wealth Management LLC 3Y 0.06% Sendero Wealth Management, LLC 3Y 0.05% YHB Investment Advisors, Inc. 3Y 7Y 0.03%

FAQ About Alberta Investment Management Corp and LBRDK

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

How long has Alberta Investment Management Corp reported owning LBRDK?

Alberta Investment Management Corp reported LBRDK across 10 quarterly 13F filings, from 2023 Q4 through 2026 Q1.

What was the largest reported LBRDK position in Alberta Investment Management Corp's portfolio?

The largest reported portfolio weight for LBRDK was 0.20% in 2025 Q1.

What is the latest reported LBRDK position on this page?

The most recent filing on this page is 2026 Q1, when Alberta Investment Management Corp reported 270,000 shares, equal to 0.08% of portfolio, with an estimated market value of $13.6M.

What does the chart on this LBRDK ownership page compare?

The chart compares Alberta Investment Management Corp's quarterly LBRDK 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 Alberta Investment Management Corp time their LBRDK position?

Based on 13F filing dates vs. subsequent LBRDK price moves, Alberta Investment Management Corp correctly timed 7 out of 16 reported position changes (44%). The annualised alpha on LBRDK relative to SPY over the holding period was -29.2%.

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