Sunriver Management LLC KAR — OPENLANE INC

Ownership history in Sunriver Management LLC  ·  10 quarters on record

AI Ownership Summary

Sunriver Management LLC reported OPENLANE INC (KAR) in 10 quarterly 13F filings from 2023 Q4 through 2025 Q4. Peak portfolio weight reached 6.93% in 2024 Q3. The latest visible filing shows KAR at 4.68% 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 KAR ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was Sunriver Management LLC's position in OPENLANE 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
2025 Q4

KAR was reported at 4.68% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
6.93% 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
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.

KAR stock page Sunriver Management LLC fund profile Sunriver Management LLC full holdings
How Sunriver Management LLC held KAR — position size vs. price
% of Fund (quarterly)
📋 Quarterly Holdings History 9 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2025 Q4 ADDED — — — 1,498,562 +7,454 +0.5% 4.68% $44.6M 2026-02-14 (Est.) $28.30
2025 Q3 REDUCED — — — 1,491,108 -775,593 -34.2% 4.66% $42.9M 2025-11-13 $25.44
2025 Q2 ADDED — — — 2,266,701 +3,252 +0.1% 5.94% $55.4M 2025-08-13 $28.87
2025 Q1 REDUCED — — — 2,263,449 -401,605 -15.1% 5.39% $43.6M 2025-05-14 $22.34
2024 Q4 REDUCED — — — 2,665,054 -676,710 -20.3% 6.33% $52.9M 2025-02-13 $20.56
2024 Q3 ADDED — — — 3,341,764 +584,824 +21.2% 6.93% $56.4M 2024-11-13 $19.98
2024 Q2 REDUCED — — — 2,756,940 -192,813 -6.5% 5.79% $45.7M 2024-08-13 $17.08
2024 Q1 ADDED — — — 2,949,753 +611,660 +26.2% 6.67% $51.0M 2024-05-14 $18.03
2023 Q4 ADDED — — — 2,338,093 +2,056,280 +729.7% 5.42% $34.6M 2024-02-13 $13.76
1 older quarter hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding KAR

As of 2026 Q1 — sorted by position size

Marathon Asset Management Ltd 3Y 1.23% Oliver Luxxe Assets LLC 3Y 7Y 0.85% SG Capital Management LLC 3Y 7Y 0.55% MQS Management LLC 3Y 0.24% Mawer Investment Management Ltd. 3Y 7Y 0.2% Hillsdale Investment Management Inc. 3Y 7Y 0.2% GUIDANCE CAPITAL, INC 0.18% HOMESTEAD ADVISERS CORP 3Y 7Y 0.14% NICHOLAS COMPANY, INC. 3Y 7Y 0.12% Argos Wealth Advisors, LLC 0.09%

FAQ About Sunriver Management LLC and KAR

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

How long has Sunriver Management LLC reported owning KAR?

Sunriver Management LLC reported KAR across 9 quarterly 13F filings, from 2023 Q4 through 2025 Q4.

What was the largest reported KAR position in Sunriver Management LLC's portfolio?

The largest reported portfolio weight for KAR was 6.93% in 2024 Q3.

What is the latest reported KAR position on this page?

The most recent filing on this page is 2025 Q4, when Sunriver Management LLC reported 1,498,562 shares, equal to 4.68% of portfolio, with an estimated market value of $44.6M.

What does the chart on this KAR ownership page compare?

The chart compares Sunriver Management LLC's quarterly KAR 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 Sunriver Management LLC time their KAR position?

Based on 13F filing dates vs. subsequent KAR price moves, Sunriver Management LLC correctly timed 2 out of 9 reported position changes (22%). The annualised alpha on KAR relative to SPY over the holding period was +9.6%.

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