GAMMA Investing LLC XENE — XENON PHARMACEUTICALS INC COM

Ownership history in GAMMA Investing LLC  ·  10 quarters on record

AI Ownership Summary

GAMMA Investing LLC reported XENON PHARMACEUTICALS INC COM (XENE) in 10 quarterly 13F filings from 2023 Q4 through 2026 Q1. The latest visible filing shows XENE 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.

What this XENE ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was GAMMA Investing LLC's position in XENON PHARMACEUTICALS INC COM, 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

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

High-water mark
Peak Conviction
0.0% in 2026 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.

XENE stock page GAMMA Investing LLC fund profile GAMMA Investing LLC full holdings
How GAMMA Investing LLC held XENE — position size vs. price
% of Fund (quarterly)    XENE 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 ADDED — — — 373 +109 +41.3% 0.00% $22K 2026-04-06 $56.84
2025 Q4 ADDED — — — 264 +79 +42.7% 0.00% $12K 2026-01-05 $41.79
2025 Q3 ADDED — — — 185 +171 +1221.4% 0.00% $7K 2025-10-02 $39.20
2025 Q2 REDUCED 94.8% +24.8% ❌ 14 -254 -94.8% 0.00% $438 2025-07-14 $32.60
2025 Q1 ADDED — — — 268 +217 +425.5% 0.00% $8K 2025-04-07 $30.63
2024 Q4 REDUCED 13.6% -14.4% ✅ 51 -8 -13.6% 0.00% $2K 2025-01-03 $40.51
2024 Q3 ADDED — — — 59 +21 +55.3% 0.00% $2K 2024-10-07 $40.59
2024 Q2 ADDED — — — 38 +3 +8.6% 0.00% $1K 2024-07-02 $36.56
2024 Q1 ADDED — — — 35 +13 +59.1% 0.00% $2K 2024-04-05 $42.25
2023 Q4 INITIATED — — — 22 — — 0.00% $995 2024-02-01 $46.43

🏢 Other funds also holding XENE

As of 2026 Q1 — sorted by position size

PEREGRINE CAPITAL MANAGEMENT LLC 3Y 7Y 0.31% SANDERS MORRIS HARRIS LLC 3Y 7Y 0.2% PSP Research LLC 0.17% Elmwood Wealth Management, Inc. 3Y 7Y 0.16% LETSON INVESTMENT MANAGEMENT, INC. 0.13% NJ State Employees Deferred Compensation Plan 3Y 7Y 0.11% FNY Investment Advisers, LLC 3Y 7Y 0.11% Y-Intercept (Hong Kong) Ltd 3Y 0.09% China Universal Asset Management Co., Ltd. 3Y 0.06% Pictet Asset Management Holding SA 0.04%

FAQ About GAMMA Investing LLC and XENE

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

How long has GAMMA Investing LLC reported owning XENE?

GAMMA Investing LLC reported XENE across 10 quarterly 13F filings, from 2023 Q4 through 2026 Q1.

What was the largest reported XENE position in GAMMA Investing LLC's portfolio?

The largest reported portfolio weight for XENE was 0.00% in 2026 Q1.

What is the latest reported XENE position on this page?

The most recent filing on this page is 2026 Q1, when GAMMA Investing LLC reported 373 shares, equal to 0.00% of portfolio, with an estimated market value of $22K.

What does the chart on this XENE ownership page compare?

The chart compares GAMMA Investing LLC's quarterly XENE 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 GAMMA Investing LLC time their XENE position?

Based on 13F filing dates vs. subsequent XENE price moves, GAMMA Investing LLC correctly timed 5 out of 9 reported position changes (56%). The annualised alpha on XENE relative to SPY over the holding period was -5.5%.

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