What stocks does Eric Mandelblatt own?

As of Q2 2026, Soroban Capital Partners reported 25 positions with a combined 13F value of $47.8B. Its largest stock positions are AMZN ($1.7B), MA ($1.3B) and TDG ($1.2B).

How often does Soroban Capital Partners update its portfolio?

Soroban Capital Partners files a 13F with the SEC every quarter, due 45 days after quarter end. The latest covers Q2 2026 and was filed Aug 14, 2026. The next one is due by Nov 16, 2026.

What does Soroban Capital Partners's 13F leave out?

A 13F lists long positions in US-listed stocks and some options held on the last day of a quarter. It leaves out short positions, most bonds, holdings not listed in the US and anything bought or sold since the quarter ended.

Where does Soroban Capital Partners's portfolio data come from?

From the 13F filings Soroban Capital Partners makes to the SEC, available on EDGAR. Each quarter shows how positions changed from the one before.

Smart money

Soroban Capital Partners LP

Eric Mandelblatt

Return history

Last 4 years · filing-date model

$100,000 to $231,918

$100,000 in SPY: $217,206.

Total return

+132%

Annualized (4Y CAGR)

+23.4%

vs SPY

+2.0 pts/yr

Moves a year

Avg hold

9.3 months

17 filings · quarters -1.2% to +12.7%

All time

+367% since Aug 14, 2013

Fund size $48B today

Oct 6, 2022 to Oct 5, 2026 · min. 95% quarterly priced · Disclosed book, unaudited · Method

Position-weighted returns use each SEC filing date. Options use underlying-stock proxies, not option premiums; put proxies can lose more than 100%. Cash, shorts, non-13F holdings and trades between filings are excluded.

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.

Stocks and funds

Share change vs Mar 31

1AMZNAmazon Com Inc11.97%
$1.7B - 7.1M shares-15.0%
2MAMastercard Incorporated9.12%
$1.3B - 2.5M shares+1.9%
3TDGTransdigm Group Inc8.45%
$1.2B - 898K shares+4.9%
4MSFTMicrosoft Corp8.29%
$1.2B - 3.1M shares-12.2%
5VVisa Inc7.97%
$1.1B - 3.3M shares+11.1%
6TSMTaiwan Semiconductor Manuf7.34%
$1.0B - 2.2M shares+12.6%

#	Stock				At Jun 30	Now
1	AMZNAmazon Com Inc	11.97%	$1.7B	-15.0%	$238.34	$254.76 +6.9%
2	MAMastercard Incorporated	9.12%	$1.3B	+1.9%	$513.60	$616.32 +20.0%
3	TDGTransdigm Group Inc	8.45%	$1.2B	+4.9%	$1332.04	$1109.77 -16.7%
4	MSFTMicrosoft Corp	8.29%	$1.2B	-12.2%	$373.02	$539.44 +44.6%
5	VVisa Inc	7.97%	$1.1B	+11.1%	$343.09	$399.75 +16.5%
6	TSMTaiwan Semiconductor Manuf	7.34%	$1.0B	+12.6%	$477.57	$422.25 -11.6%

Options positions2 positions (0 puts, 2 calls) - $33.6B. Priced off the underlying stock - 13F never discloses strike or premium.

Share change vs Mar 31

1MSFT callsMicrosoft Corp66.52%
$22.4B - 60.0M shares-
2META callsMeta Platforms Inc33.48%
$11.3B - 20.0M shares-

#	Stock				At Jun 30	Now
1	MSFT callsMicrosoft Corp	66.52%	$22.4B	-	$373.02	$539.44 +44.6%
2	META callsMeta Platforms Inc	33.48%	$11.3B	-	$563.29	$736.72 +30.8%

17 more on a paid plan

Unlock the full portfolio and quarterly changes.

Unlock all 17 holdings

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 16, 2026.

Disclosed changes

Q2 2026 holdings. Exact trade dates are not disclosed.

Common questions

What stocks does Eric Mandelblatt own?: As of Q2 2026, Soroban Capital Partners reported 25 positions with a combined 13F value of $47.8B. Its largest stock positions are AMZN ($1.7B), MA ($1.3B) and TDG ($1.2B).
How often does Soroban Capital Partners update its portfolio?: Soroban Capital Partners files a 13F with the SEC every quarter, due 45 days after quarter end. The latest covers Q2 2026 and was filed Aug 14, 2026. The next one is due by Nov 16, 2026.
What does Soroban Capital Partners's 13F leave out?: A 13F lists long positions in US-listed stocks and some options held on the last day of a quarter. It leaves out short positions, most bonds, holdings not listed in the US and anything bought or sold since the quarter ended.
Where does Soroban Capital Partners's portfolio data come from?: From the 13F filings Soroban Capital Partners makes to the SEC, available on EDGAR. Each quarter shows how positions changed from the one before.

Smart money

Soroban Capital Partners LP

Eric Mandelblatt

Return history

Last 4 years · filing-date model

$100,000 to $231,918

$100,000 in SPY: $217,206.

Total return

+132%

Annualized (4Y CAGR)

+23.4%

vs SPY

+2.0 pts/yr

Moves a year

Avg hold

9.3 months

17 filings · quarters -1.2% to +12.7%

All time

+367% since Aug 14, 2013

Fund size $48B today

Oct 6, 2022 to Oct 5, 2026 · min. 95% quarterly priced · Disclosed book, unaudited · Method

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.

Stocks and funds

Share change vs Mar 31

1AMZNAmazon Com Inc11.97%
$1.7B - 7.1M shares-15.0%
2MAMastercard Incorporated9.12%
$1.3B - 2.5M shares+1.9%
3TDGTransdigm Group Inc8.45%
$1.2B - 898K shares+4.9%
4MSFTMicrosoft Corp8.29%
$1.2B - 3.1M shares-12.2%
5VVisa Inc7.97%
$1.1B - 3.3M shares+11.1%
6TSMTaiwan Semiconductor Manuf7.34%
$1.0B - 2.2M shares+12.6%

#	Stock				At Jun 30	Now
1	AMZNAmazon Com Inc	11.97%	$1.7B	-15.0%	$238.34	$254.76 +6.9%
2	MAMastercard Incorporated	9.12%	$1.3B	+1.9%	$513.60	$616.32 +20.0%
3	TDGTransdigm Group Inc	8.45%	$1.2B	+4.9%	$1332.04	$1109.77 -16.7%
4	MSFTMicrosoft Corp	8.29%	$1.2B	-12.2%	$373.02	$539.44 +44.6%
5	VVisa Inc	7.97%	$1.1B	+11.1%	$343.09	$399.75 +16.5%
6	TSMTaiwan Semiconductor Manuf	7.34%	$1.0B	+12.6%	$477.57	$422.25 -11.6%

Options positions2 positions (0 puts, 2 calls) - $33.6B. Priced off the underlying stock - 13F never discloses strike or premium.

Share change vs Mar 31

1MSFT callsMicrosoft Corp66.52%
$22.4B - 60.0M shares-
2META callsMeta Platforms Inc33.48%
$11.3B - 20.0M shares-

#	Stock				At Jun 30	Now
1	MSFT callsMicrosoft Corp	66.52%	$22.4B	-	$373.02	$539.44 +44.6%
2	META callsMeta Platforms Inc	33.48%	$11.3B	-	$563.29	$736.72 +30.8%

17 more on a paid plan

Unlock the full portfolio and quarterly changes.

Unlock all 17 holdings

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 16, 2026.

Disclosed changes

Q2 2026 holdings. Exact trade dates are not disclosed.

Common questions

What stocks does Eric Mandelblatt own?: As of Q2 2026, Soroban Capital Partners reported 25 positions with a combined 13F value of $47.8B. Its largest stock positions are AMZN ($1.7B), MA ($1.3B) and TDG ($1.2B).
How often does Soroban Capital Partners update its portfolio?: Soroban Capital Partners files a 13F with the SEC every quarter, due 45 days after quarter end. The latest covers Q2 2026 and was filed Aug 14, 2026. The next one is due by Nov 16, 2026.
What does Soroban Capital Partners's 13F leave out?: A 13F lists long positions in US-listed stocks and some options held on the last day of a quarter. It leaves out short positions, most bonds, holdings not listed in the US and anything bought or sold since the quarter ended.
Where does Soroban Capital Partners's portfolio data come from?: From the 13F filings Soroban Capital Partners makes to the SEC, available on EDGAR. Each quarter shows how positions changed from the one before.