Knollwood Investment Advisory, LLC RBRK — RUBRIK INC.

Ownership history in Knollwood Investment Advisory, LLC  ·  7 quarters on record

AI Ownership Summary

Knollwood Investment Advisory, LLC reported RUBRIK INC. (RBRK) in 7 quarterly 13F filings from 2024 Q3 through 2026 Q1. Peak portfolio weight reached 1.71% in 2025 Q4. The latest visible filing shows RBRK at 1.17% 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 RBRK ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was Knollwood Investment Advisory, LLC's position in RUBRIK 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

RBRK was reported at 1.17% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
1.71% in 2025 Q4

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

Time in book
Holding Window
2024 Q3 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.

RBRK stock page Knollwood Investment Advisory, LLC fund profile Knollwood Investment Advisory, LLC full holdings
How Knollwood Investment Advisory, LLC held RBRK — position size vs. price
% of Fund (quarterly)    RBRK price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 7 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2026 Q1 UNCHANGED — — — 237,420 — 0% 1.17% $11.6M 2026-05-14 $62.80
2025 Q4 ADDED — — — 237,420 +27,802 +13.3% 1.71% $18.2M 2026-02-13 $54.55
2025 Q3 ADDED — — — 209,618 +88,886 +73.6% 1.55% $17.2M 2025-11-14 $71.55
2025 Q2 ADDED — — — 120,732 +70,844 +142.0% 1.04% $10.8M 2025-08-13 $88.08
2025 Q1 REDUCED 9.1% +46.9% ❌ 49,888 -5,000 -9.1% 0.34% $3.0M 2025-05-14 $84.61
2024 Q4 REDUCED 50.1% -6.7% ✅ 54,888 -55,000 -50.1% 0.38% $3.6M 2025-02-14 $77.54
2024 Q3 INITIATED — — — 109,888 — — 0.14% $1.3M 2024-11-14 $44.50

🏢 Other funds also holding RBRK

As of 2026 Q3 — sorted by position size

CONGRESS ASSET MANAGEMENT CO 3Y 7Y 0.53% STABLEFORD CAPITAL II LLC 3Y 0.45% Green Alpha Advisors, LLC 3Y 0.44% Whalen Wealth Management Inc. 0.13% LifeGoal Investments, LLC 0.1% GK Wealth Management LLC 0.1% Legacy Wealth Asset Management, LLC 3Y 0.08% ZEVENBERGEN CAPITAL INVESTMENTS LLC 3Y 7Y 0.08% Central Pacific Bank - Trust Division 0.07% RIVERSEDGE ADVISORS, LLC 3Y 7Y 0.07%

FAQ About Knollwood Investment Advisory, LLC and RBRK

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

How long has Knollwood Investment Advisory, LLC reported owning RBRK?

Knollwood Investment Advisory, LLC reported RBRK across 7 quarterly 13F filings, from 2024 Q3 through 2026 Q1.

What was the largest reported RBRK position in Knollwood Investment Advisory, LLC's portfolio?

The largest reported portfolio weight for RBRK was 1.71% in 2025 Q4.

What is the latest reported RBRK position on this page?

The most recent filing on this page is 2026 Q1, when Knollwood Investment Advisory, LLC reported 237,420 shares, equal to 1.17% of portfolio, with an estimated market value of $11.6M.

What does the chart on this RBRK ownership page compare?

The chart compares Knollwood Investment Advisory, LLC's quarterly RBRK 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 Knollwood Investment Advisory, LLC time their RBRK position?

Based on 13F filing dates vs. subsequent RBRK price moves, Knollwood Investment Advisory, LLC correctly timed 2 out of 6 reported position changes (33%). The annualised alpha on RBRK relative to SPY over the holding period was +6.6%.

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