MOUNTAIN PACIFIC INVESTMENT ADVISERS LLC WAY — WAYSTAR HLDG CORP

Ownership history in MOUNTAIN PACIFIC INVESTMENT ADVISERS LLC  ·  4 quarters on record

AI Ownership Summary

MOUNTAIN PACIFIC INVESTMENT ADVISERS LLC reported WAYSTAR HLDG CORP (WAY) in 4 quarterly 13F filings from 2025 Q3 through 2026 Q2. Peak portfolio weight reached 0.41% in 2025 Q4. The latest visible filing shows WAY at 0.18% 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 WAY ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was MOUNTAIN PACIFIC INVESTMENT ADVISERS LLC's position in WAYSTAR HLDG 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 Q2

WAY was reported at 0.18% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
0.41% 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
2025 Q3 to 2026 Q2

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.

WAY stock page MOUNTAIN PACIFIC INVESTMENT ADVISERS LLC fund profile MOUNTAIN PACIFIC INVESTMENT ADVISERS LLC full holdings
How MOUNTAIN PACIFIC INVESTMENT ADVISERS LLC held WAY — position size vs. price
% of Fund (quarterly)    WAY price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 4 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2026 Q2 REDUCED — — — 57,164 -24,815 -30.3% 0.18% $1.2M 2026-07-30 $20.94
2026 Q1 ADDED — — — 81,979 +3,876 +5.0% 0.34% $2.0M 2026-04-16 $25.32
2025 Q4 ADDED — — — 78,103 +33,549 +75.3% 0.41% $2.6M 2026-01-29 $26.71
2025 Q3 INITIATED — — — 44,554 — — 0.26% $1.7M 2025-10-30 $37.06

🏢 Other funds also holding WAY

As of 2026 Q2 — sorted by position size

EQT Fund Management S.a r.l. 3Y 59.21% BAIN CAPITAL VENTURE INVESTORS, LLC 3Y 7Y 13.65% Blue Door Asset Management, LLC 3Y 9.42% GOLDENTREE ASSET MANAGEMENT LP 3Y 7Y 7.34% BAIN CAPITAL INVESTORS LLC 3Y 7Y 5.65% ALTA FOX CAPITAL MANAGEMENT, LLC 3Y 4.29% Greenvale Capital LLP 3Y 7Y 3.36% Sio Capital Management, LLC 3Y 7Y 3.15% AVENIR CORP 3Y 7Y 2.86% Sunriver Management LLC 3Y 7Y 2.76%

FAQ About MOUNTAIN PACIFIC INVESTMENT ADVISERS LLC and WAY

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

How long has MOUNTAIN PACIFIC INVESTMENT ADVISERS LLC reported owning WAY?

MOUNTAIN PACIFIC INVESTMENT ADVISERS LLC reported WAY across 4 quarterly 13F filings, from 2025 Q3 through 2026 Q2.

What was the largest reported WAY position in MOUNTAIN PACIFIC INVESTMENT ADVISERS LLC's portfolio?

The largest reported portfolio weight for WAY was 0.41% in 2025 Q4.

What is the latest reported WAY position on this page?

The most recent filing on this page is 2026 Q2, when MOUNTAIN PACIFIC INVESTMENT ADVISERS LLC reported 57,164 shares, equal to 0.18% of portfolio, with an estimated market value of $1.2M.

What does the chart on this WAY ownership page compare?

The chart compares MOUNTAIN PACIFIC INVESTMENT ADVISERS LLC's quarterly WAY 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 MOUNTAIN PACIFIC INVESTMENT ADVISERS LLC time their WAY position?

Based on 13F filing dates vs. subsequent WAY price moves, MOUNTAIN PACIFIC INVESTMENT ADVISERS LLC correctly timed 0 out of 3 reported position changes (0%). The annualised alpha on WAY relative to SPY over the holding period was +2614.2%.

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