Decision Timeline

CMCSA, decision by decision.

Not just who owns it now. This is the sequence of material choices managers reported, when each choice became visible, and the observed result after disclosure.

Material decisions: 24
Buy / add: 13
Trim / exit: 11

The cohort disagreed in Q2 2026.

At least one tracked manager bought or added while another trimmed or exited. The disagreement is the signal; it is not collapsed into a consensus score.

Eight-quarter evidence

7 reported quarters

Q2 2026
filed Sep 2, 2026
64d lag
ADD+177.0%
Joel Greenblatt · 0.1% of reported portfolio
Original SEC filing ↗
-18.9% vs SPY
21 sessions after disclosure
direction not supported so far
Q2 2026
filed Aug 24, 2026
55d lag
ADD+102.1%
First Eagle Investment Management · 1.6% of reported portfolio
Original SEC filing ↗
-21.1% vs SPY
28 sessions after disclosure
direction not supported so far
Q2 2026
filed Aug 14, 2026
45d lag
TRIM-72.9%
Bill Nygren · 1.0% of reported portfolio
Original SEC filing ↗
-15.5% vs SPY
34 sessions after disclosure
direction supported so far
Q2 2026
filed Jul 30, 2026
30d lag
ADD+55.5%
Torray Funds · 2.9% of reported portfolio
Original SEC filing ↗
-13.3% vs SPY
45 sessions after disclosure
direction not supported so far
Q1 2026
filed May 15, 2026
45d lag
TRIM-60.0%
Joel Greenblatt · 0.1% of reported portfolio
Original SEC filing ↗
-0.9% vs SPY
63 sessions after disclosure
direction supported so far
Q1 2026
filed May 1, 2026
31d lag
NEWNEW
Torray Funds · 2.3% of reported portfolio
Original SEC filing ↗
-13.8% vs SPY
63 sessions after disclosure
direction not supported so far
Q1 2026
filed Apr 22, 2026
22d lag
ADD+50.6%
David Katz · 2.4% of reported portfolio
Original SEC filing ↗
-34.2% vs SPY
63 sessions after disclosure
direction not supported so far
Q4 2025
filed Feb 17, 2026
48d lag
TRIM-25.3%
First Pacific Advisors · 4.9% of reported portfolio
Original SEC filing ↗
-28.1% vs SPY
63 sessions after disclosure
direction supported so far
Q4 2025
filed Feb 17, 2026
48d lag
ADD+24.5%
Bill Nygren · 1.0% of reported portfolio
Original SEC filing ↗
-28.1% vs SPY
63 sessions after disclosure
direction not supported so far
Q4 2025
filed Feb 17, 2026
48d lag
TRIM-35.1%
Joel Greenblatt · 0.2% of reported portfolio
Original SEC filing ↗
-28.1% vs SPY
63 sessions after disclosure
direction supported so far
Q4 2025
filed Feb 12, 2026
43d lag
TRIM-81.2%
Wallace Weitz · 0.8% of reported portfolio
Original SEC filing ↗
-29.4% vs SPY
63 sessions after disclosure
direction supported so far
Q4 2025
filed Feb 3, 2026
34d lag
EXITEXIT
Robert Olstein · 1.0% of reported portfolio
Original SEC filing ↗
-18.0% vs SPY
63 sessions after disclosure
direction supported so far
Q4 2025
filed Jan 16, 2026
16d lag
TRIM-29.1%
David Katz · 2.5% of reported portfolio
Original SEC filing ↗
+1.9% vs SPY
63 sessions after disclosure
direction not supported so far
Q3 2025
filed Nov 14, 2025
45d lag
ADD+1562.4%
Joel Greenblatt · 0.2% of reported portfolio
Original SEC filing ↗
+21.9% vs SPY
63 sessions after disclosure
direction supported so far
Q1 2025
filed May 15, 2025
45d lag
EXITEXIT
Viking Global Investors · 2.4% of reported portfolio
Original SEC filing ↗
-13.5% vs SPY
63 sessions after disclosure
direction supported so far
Q1 2025
filed May 15, 2025
45d lag
TRIM-27.1%
Hillman Capital Management · 2.1% of reported portfolio
Original SEC filing ↗
-13.5% vs SPY
63 sessions after disclosure
direction supported so far
Q1 2025
filed May 15, 2025
45d lag
TRIM-29.9%
Joel Greenblatt · 0.1% of reported portfolio
Original SEC filing ↗
-13.5% vs SPY
63 sessions after disclosure
direction supported so far
Q1 2025
filed May 9, 2025
39d lag
ADD+375.3%
Wallace Weitz · 0.9% of reported portfolio
Original SEC filing ↗
-18.1% vs SPY
63 sessions after disclosure
direction not supported so far
Q1 2025
filed Apr 14, 2025
14d lag
ADD+50.5%
Robert Olstein · 1.1% of reported portfolio
Original SEC filing ↗
-15.5% vs SPY
63 sessions after disclosure
direction not supported so far
Q4 2024
filed Feb 14, 2025
45d lag
ADD+540.8%
Viking Global Investors · 2.4% of reported portfolio
Original SEC filing ↗
+1.0% vs SPY
63 sessions after disclosure
direction supported so far
Q4 2024
filed Feb 14, 2025
45d lag
TRIM-44.0%
Joel Greenblatt · 0.3% of reported portfolio
Original SEC filing ↗
+1.0% vs SPY
63 sessions after disclosure
direction not supported so far
Q3 2024
filed Nov 14, 2024
45d lag
NEWNEW
Viking Global Investors · 0.5% of reported portfolio
Original SEC filing ↗
-19.2% vs SPY
63 sessions after disclosure
direction not supported so far
Q3 2024
filed Nov 14, 2024
45d lag
ADD+107.3%
Joel Greenblatt · 0.3% of reported portfolio
Original SEC filing ↗
-19.2% vs SPY
63 sessions after disclosure
direction not supported so far
Q3 2024
filed Oct 31, 2024
31d lag
ADD+23.3%
Robert Olstein · 0.8% of reported portfolio
Original SEC filing ↗
-28.1% vs SPY
63 sessions after disclosure
direction not supported so far

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Material means a new or exited position, or at least a 20% share-count change, with at least 0.5% portfolio weight or $100 million reported value. Share counts are adjusted for confirmed splits. Outcomes start after disclosure, not at an invented trade date, and are not manager returns.