HighMark Wealth Management LLC STRO — SUTRO BIOPHARMA INC

Ownership history in HighMark Wealth Management LLC  ·  22 quarters on record

AI Ownership Summary

HighMark Wealth Management LLC reported SUTRO BIOPHARMA INC (STRO) in 22 quarterly 13F filings from 2023 Q4 through 2026 Q1. Peak portfolio weight reached 0.01% in 2024 Q1. The latest visible filing shows STRO at 0.00% 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 STRO ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was HighMark Wealth Management LLC's position in SUTRO BIOPHARMA 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

STRO was reported at 0.00% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
0.01% in 2024 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.

STRO stock page HighMark Wealth Management LLC fund profile HighMark Wealth Management LLC full holdings
How HighMark Wealth Management LLC held STRO — position size vs. price
% of Fund (quarterly)    STRO 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 — — — 23 — 0% 0.00% $572 2026-05-06 $37.69
2025 Q4 REDUCED 89.8% +115.3% ❌ 23 -202 -89.8% 0.00% $266 2026-02-05 $14.60
2025 Q3 UNCHANGED — — — 225 — 0% 0.00% $195 2025-10-20 $11.40
2025 Q2 UNCHANGED — — — 225 — 0% 0.00% $161 2025-07-21 $8.00
2025 Q1 REDUCED 90.0% +9.2% ❌ 225 -2,025 -90.0% 0.00% $146 2025-04-24 $13.00
2024 Q4 UNCHANGED — — — 2,250 — 0% 0.00% $4K 2025-01-31 $19.20
2024 Q3 UNCHANGED — — — 2,250 — 0% 0.00% $8K 2024-10-17 $37.10
2024 Q2 UNCHANGED — — — 2,250 — 0% 0.00% $7K 2024-07-29 $42.80
2024 Q1 UNCHANGED — — — 2,250 — 0% 0.01% $13K 2024-04-29 $35.20
2023 Q4 UNCHANGED — — — 2,250 — 0% 0.01% $10K 2024-01-23 $48.10
12 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding STRO

As of 2026 Q1 — sorted by position size

AJU IB Investment Co., Ltd. 3Y 1.43% GSA CAPITAL PARTNERS LLP 3Y 7Y 0.04% FNY Investment Advisers, LLC 3Y 7Y 0.01% Sigma Planning Corp 3Y 7Y 0.01% UBS Group AG 3Y 7Y 0.0% Physician Wealth Advisors, Inc. 3Y 0.0% VANGUARD FIDUCIARY TRUST CO 0.0% VANGUARD CAPITAL MANAGEMENT LLC 0.0% Fortitude Family Office, LLC 0.0% Fisher Asset Management, LLC 3Y 7Y 0.0%

FAQ About HighMark Wealth Management LLC and STRO

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

How long has HighMark Wealth Management LLC reported owning STRO?

HighMark Wealth Management LLC reported STRO across 10 quarterly 13F filings, from 2023 Q4 through 2026 Q1.

What was the largest reported STRO position in HighMark Wealth Management LLC's portfolio?

The largest reported portfolio weight for STRO was 0.01% in 2024 Q1.

What is the latest reported STRO position on this page?

The most recent filing on this page is 2026 Q1, when HighMark Wealth Management LLC reported 23 shares, equal to 0.00% of portfolio, with an estimated market value of $572.

What does the chart on this STRO ownership page compare?

The chart compares HighMark Wealth Management LLC's quarterly STRO 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 HighMark Wealth Management LLC time their STRO position?

Based on 13F filing dates vs. subsequent STRO price moves, HighMark Wealth Management LLC correctly timed 5 out of 11 reported position changes (45%). The annualised alpha on STRO relative to SPY over the holding period was -37.8%.

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