PTGX — PROTAGONIST THERAPEUTICS INC

Ownership history in 683 Capital Management, LLC  ·  15 quarters on record

AI Ownership Summary

683 Capital Management, LLC reported PROTAGONIST THERAPEUTICS INC (PTGX) in 15 quarterly 13F filings from 2023 Q4 through 2025 Q4. Peak portfolio weight reached 1.67% in 2025 Q1. The latest visible filing shows PTGX at 0.19% 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 PTGX ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was 683 Capital Management, LLC's position in PROTAGONIST THERAPEUTICS 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

PTGX was reported at 0.19% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
1.67% in 2025 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 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.

PTGX stock page 683 Capital Management, LLC fund profile 683 Capital Management, LLC full holdings
How 683 Capital Management, LLC held PTGX — position size vs. price
% of Fund (quarterly)    PTGX price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 10 quarters  ▾
Quarter Action Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2025 Q4 REDUCED 50,300 -330,369 -86.8% 0.19% $4.4M 2026-02-14 (Est.) $81.49
2025 Q4 REDUCED 380,669 -26,831 -6.6% 1.45% $33.2M 2026-02-14 (Est.) $81.49
2025 Q3 REDUCED 407,500 -37,500 -8.4% 1.41% $27.1M 2025-11-14 $84.61
2025 Q2 REDUCED 445,000 -55,000 -11.0% 1.62% $24.6M 2025-08-14 $54.99
2025 Q1 ADDED 500,000 +90,000 +22.0% 1.67% $24.2M 2025-05-15 $44.41
2024 Q4 REDUCED 410,000 -10,000 -2.4% 0.98% $15.8M 2025-02-14 $38.67
2024 Q3 REDUCED 420,000 -184,449 -30.5% 1.44% $18.9M 2024-11-14 $41.04
2024 Q2 REDUCED 604,449 -95,551 -13.7% 1.58% $20.9M 2024-08-14 $40.24
2024 Q1 REDUCED 700,000 -15,000 -2.1% 1.48% $20.3M 2024-05-15 $31.47
2023 Q4 REDUCED 715,000 -17,784 -2.4% 1.34% $16.4M 2024-02-14 $27.88
5 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding PTGX

As of 2026 Q1 — sorted by position size

FRANKLIN STREET ADVISORS INC /NC 3Y 7Y 0.07% NORDEN GROUP LLC 0.03% NBC SECURITIES, INC. 0.02% E Fund Management Co., Ltd. 3Y 0.02% EXCHANGE TRADED CONCEPTS, LLC 3Y 0.02% GAMMA Investing LLC 0.01% E Fund Management (Hong Kong) Co., Ltd. 3Y 0.01% GF FUND MANAGEMENT CO. LTD. 0.0% SG Americas Securities, LLC 3Y 7Y 0.0% WOLFF WIESE MAGANA LLC 3Y 0.0%

FAQ About 683 Capital Management, LLC and PTGX

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

How long has 683 Capital Management, LLC reported owning PTGX?

683 Capital Management, LLC reported PTGX across 10 quarterly 13F filings, from 2023 Q4 through 2025 Q4.

What was the largest reported PTGX position in 683 Capital Management, LLC's portfolio?

The largest reported portfolio weight for PTGX was 1.67% in 2025 Q1.

What is the latest reported PTGX position on this page?

The most recent filing on this page is 2025 Q4, when 683 Capital Management, LLC reported 50,300 shares, equal to 0.19% of portfolio, with an estimated market value of $4.4M.

What does the chart on this PTGX ownership page compare?

The chart compares 683 Capital Management, LLC's quarterly PTGX 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.

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