AlphaYou
Soroban Capital Partners LP
Eric Mandelblatt
Return history
Last 4 years copying the filings
$100,000 would be $248,880
The same $100,000 in SPY would be $221,795.
Total return
+149%
Annualized (4Y CAGR)
+25.6%
vs SPY
+3.6 pts/yr
Moves a year
90
Avg hold
9.3 months
Across 17 filings, buying each one the day it became public. Best quarter +13.6%, worst -1.2%.
All time
+367% since Aug 2013
Fund size $48B today
Sep 2022 to Sep 2026, at least 95% of the book priced each quarter. Not audited fund performance. What this covers
Each quarter is priced from the date its SEC filing became public, not the quarter it describes, and weighted by position size. A 13F shows long US stock holdings only, so shorts, cash, options, and anything bought and sold between two filings are not in this line.
Added to MA and exited AMZN in Q2 2026.
$47.8B in this filing25 positions
Holdings as of Jun 30, 2026. Filed Aug 14, 2026.
70% of this filing is options. Leveraged positions can change sharply; moves since Jun 30, 2026 are not reflected.
Options positions2 positions (0 puts, 2 calls) - $33.6B. Priced off the underlying stock - 13F never discloses strike or premium.
- 1
MSFT callsMicrosoft Corp66.52%
$22.4B - 60.0M shares- - 2
META callsMeta Platforms Inc33.48%
$11.3B - 20.0M shares-
What is missing
Top 10 concentration: 90%. This filing does not include cash, short positions, private investments, bonds, or many overseas holdings. Next filing due ~Nov 14, 2026.