Gruss & Co., LLC TMUS — T-MOBILE US INC

Ownership history in Gruss & Co., LLC  ·  20 quarters on record

AI Ownership Summary

Gruss & Co., LLC reported T-MOBILE US INC (TMUS) in 20 quarterly 13F filings from 2024 Q3 through 2026 Q1. Peak portfolio weight reached 1.63% in 2024 Q3. The latest visible filing shows TMUS at 0.49% 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 TMUS ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was Gruss & Co., LLC's position in T-MOBILE US 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

TMUS was reported at 0.49% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
1.63% in 2024 Q3

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.

TMUS stock page Gruss & Co., LLC fund profile Gruss & Co., LLC full holdings
How Gruss & Co., LLC held TMUS — position size vs. price
% of Fund (quarterly)    TMUS 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 — — — 1,000 — 0% 0.49% $210K 2026-05-05 $194.31
2025 Q4 UNCHANGED — — — 1,000 — 0% 0.45% $203K 2026-02-10 $198.48
2025 Q3 UNCHANGED — — — 1,000 — 0% 0.62% $239K 2025-11-06 $199.06
2025 Q2 UNCHANGED — — — 1,000 — 0% 1.11% $238K 2025-08-05 $235.78
2025 Q1 UNCHANGED — — — 1,000 — 0% 1.16% $267K 2025-05-08 $243.33
2024 Q4 UNCHANGED — — — 1,000 — 0% 0.94% $221K 2025-02-06 $242.21
2024 Q3 REDUCED 71.4% +7.3% ❌ 1,000 -2,500 -71.4% 1.63% $206K 2024-10-16 $214.57
13 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding TMUS

As of 2026 Q1 — sorted by position size

Overbrook Management Corp 3Y 7Y 3.07% Baker Chad R 3Y 7Y 2.89% Leibman Financial Services, Inc. 2.88% AVAII WEALTH MANAGEMENT, LLC 3Y 2.65% Advanced Asset Management Advisors Inc 3Y 7Y 2.48% HOERTKORN RICHARD CHARLES 3Y 7Y 2.29% Stillwater Capital Advisors, LLC 3Y 7Y 2.22% Reynders McVeigh Capital Management, LLC 3Y 7Y 2.18% Illumine Investment Management, LLC 2.14% Graphene Investments SAS 3Y 2.11%

FAQ About Gruss & Co., LLC and TMUS

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

How long has Gruss & Co., LLC reported owning TMUS?

Gruss & Co., LLC reported TMUS across 7 quarterly 13F filings, from 2024 Q3 through 2026 Q1.

What was the largest reported TMUS position in Gruss & Co., LLC's portfolio?

The largest reported portfolio weight for TMUS was 1.63% in 2024 Q3.

What is the latest reported TMUS position on this page?

The most recent filing on this page is 2026 Q1, when Gruss & Co., LLC reported 1,000 shares, equal to 0.49% of portfolio, with an estimated market value of $210K.

What does the chart on this TMUS ownership page compare?

The chart compares Gruss & Co., LLC's quarterly TMUS 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 Gruss & Co., LLC time their TMUS position?

Based on 13F filing dates vs. subsequent TMUS price moves, Gruss & Co., LLC correctly timed 4 out of 10 reported position changes (40%). The annualised alpha on TMUS relative to SPY over the holding period was -0.4%.

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