Institutional Portfolio Overlap & Shared Holdings

Compare institutional investor portfolios using publicly disclosed SEC Form 13F filings tracked by InsiderSet. Analyze shared holdings, overlapping sector exposure, consensus smart money positions, portfolio concentration, and estimated current values across major hedge funds and institutional asset managers.

Sector portfolio overlap

Explore shared holdings and top overlapping superinvestor pairs within a sector.

Investor AInvestor B

TCI Fund Management & Duquesne Family Office Llc Portfolio Overlap

Shared 13F holdings between TCI Fund Management and Duquesne Family Office Llc based on latest reported SEC filings (the quarter ended June 30, 2026).

Overlap Score

Minimal overlap

Shared Holdings

1 shared position across both portfolios (11 holdings for TCI Fund Management, 76 for Duquesne Family Office Llc).

Stock	TCI Fund Management value	Duquesne Family Office Llc value	Combined value	Conviction	Est. current value	Sector
GOOGL Alphabet Inc.	$878.06M	$120.18M	$998.24M	2.3%	$970.20M	Communication Services

Largest Shared Position

Alphabet Inc. (GOOGL) represents the largest overlapping position between TCI Fund Management and Duquesne Family Office Llc based on the latest reported SEC Form 13F filings for the quarter ended June 30, 2026. The combined disclosed value of GOOGL positions reported by both investment firms is approximately $998.24M, reflecting overlapping institutional exposure to Alphabet Inc..

Shared Sector Exposure

Sector	Combined value	Shared holdings
Communication Services	$998.24M	GOOGL

Consensus Smart Money Signals

Shared holdings between TCI Fund Management and Duquesne Family Office Llc may indicate overlapping long-term investment themes or broader smart money consensus toward specific companies and sectors. SEC Form 13F filings report positions, not investment intent.

Strongest overlap by reported value: GOOGL ($998.24M combined).
Highest average portfolio weight in overlap: GOOGL (2.3% conviction score).

Historical Overlap Trend

The latest period shows 1 shared holdings ($998.24M combined reported value).

Overlap Score Guide

Score	Meaning
85–100	Extremely high shared conviction
65–84	Strong overlap
45–64	Moderate overlap
25–44	Limited overlap
0–24	Minimal overlap