RBLX — ROBLOX CORP

Ownership history in Altos Ventures Management, Inc.  ·  17 quarters on record

AI Ownership Summary

Altos Ventures Management, Inc. reported ROBLOX CORP (RBLX) in 17 quarterly 13F filings from 2023 Q4 through 2025 Q4. Peak portfolio weight reached 100.0% in 2023 Q4. The latest visible filing shows RBLX at 100.00% 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 RBLX ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was Altos Ventures Management, Inc.'s position in ROBLOX 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
2025 Q4

RBLX was reported at 100.00% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
100.0% 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.

RBLX stock page Altos Ventures Management, Inc. fund profile Altos Ventures Management, Inc. full holdings
How Altos Ventures Management, Inc. held RBLX — position size vs. price
% of Fund (quarterly)    RBLX price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 9 quarters  ▾
Quarter Action Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2025 Q4 UNCHANGED 111,112 — 0% 100.00% $11.7M 2026-02-14 (Est.) $63.17
2025 Q3 UNCHANGED 111,112 — 0% 100.00% $11.7M 2025-11-07 $106.84
2025 Q2 REDUCED 111,112 -4,959,880 -97.8% 100.00% $11.7M 2025-07-24 $118.12
2025 Q1 REDUCED 5,070,992 -9,919,760 -66.2% 100.00% $295.6M 2025-05-12 $73.49
2024 Q4 REDUCED 14,990,752 -18,669,714 -55.5% 100.00% $867.4M 2025-01-28 $68.43
2024 Q3 REDUCED 33,660,466 -10,282,377 -23.4% 100.00% $1.49B 2024-11-13 $53.14
2024 Q2 REDUCED 43,942,843 -178,852 -0.4% 100.00% $1.64B 2024-08-13 $38.75
2024 Q1 REDUCED 44,121,695 -4,805,622 -9.8% 100.00% $1.68B 2024-04-26 $36.01
2023 Q4 REDUCED 48,927,317 -11,283,178 -18.7% 100.00% $2.24B 2024-02-14 $44.14
8 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding RBLX

As of 2026 Q1 — sorted by position size

Ahara Advisors LLC 4.53% Atala Financial Inc 2.2% Franchise GP Ltd 0.62% Stonekeep Investments, LLC 0.32% ANCHYRA PARTNERS LLC 0.31% FNY Investment Advisers, LLC 3Y 7Y 0.31% Cypress Wealth Services, LLC 3Y 7Y 0.23% Paragon Capital Management Ltd 3Y 7Y 0.22% Polianta Ltd 3Y 7Y 0.2% TANDEM CAPITAL MANAGEMENT CORP /ADV 3Y 0.19%

FAQ About Altos Ventures Management, Inc. and RBLX

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

How long has Altos Ventures Management, Inc. reported owning RBLX?

Altos Ventures Management, Inc. reported RBLX across 9 quarterly 13F filings, from 2023 Q4 through 2025 Q4.

What was the largest reported RBLX position in Altos Ventures Management, Inc.'s portfolio?

The largest reported portfolio weight for RBLX was 100.00% in 2023 Q4.

What is the latest reported RBLX position on this page?

The most recent filing on this page is 2025 Q4, when Altos Ventures Management, Inc. reported 111,112 shares, equal to 100.00% of portfolio, with an estimated market value of $11.7M.

What does the chart on this RBLX ownership page compare?

The chart compares Altos Ventures Management, Inc.'s quarterly RBLX 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.

← Back to Altos Ventures Management, Inc. Holdings