Stephen Mandel - Lone Pine Capital 13F Activity & Position Changes (Q1 2019)

According to the SEC 13F filed on Aug 14, 2026, the Lone Pine Capital portfolio showed several notable changes in holdings as of quarter-end Mar 31, 2019. The activity included new positions, additions to existing holdings, reductions, and complete exits, providing a clear view of how the portfolio evolved during the quarter.

During Q1 2019, the filing reported:

New Buys - D.R. Horton, Inc., Alphabet Inc., Shopify Inc., S&P Global Inc., Block, Inc., and 1 more

Increases - Salesforce, Inc., MercadoLibre, Inc., Sea Limited, Transdigm Group Incorporated

Reductions - Adobe Inc., Autodesk, Inc., Amazon.com, Inc., Alibaba Group Holding Limited, Booking Holdings Inc. Common St, and 7 more

Complete Exits - NIO Inc., PayPal Holdings, Inc.

These updates highlight how the portfolio adjusted across different sectors and market conditions, offering insights into allocation shifts and investment trends.

Date	Symbol	Name	Type	Change Qty	% Change	Value	Remaining
Q1 2019	ADBE Adobe Inc.	Adobe Inc.	Sell	-599,600	-11.7%	$1.21M	4,528,199
Q1 2019	ADSK Autodesk, Inc.	Autodesk, Inc.	Sell	-396,107	-10.3%	$536.04K	3,440,100
Q1 2019	AMZN Amazon.com, Inc.	Amazon.com, Inc.	Sell	-90,000	-12.1%	$1.16M	651,661
Q1 2019	BABA Alibaba Group Holding Limited	Alibaba Group Holding Limited	Sell	-570,000	-9.2%	$1.03M	5,640,334
Q1 2019	BKNG Booking Holdings Inc. Common St	Booking Holdings Inc. Common St	Sell	-32,100	-9.1%	$560.81K	321,396
Q1 2019	CRM Salesforce, Inc.	Salesforce, Inc.	Buy	+1,302,213	+197.9%	$310.44K	1,960,213
Q1 2019	CSX CSX Corporation	CSX Corporation	Sell	-1,646,789	-17.1%	$598.46K	7,998,686
Q1 2019	DHI D.R. Horton, Inc.	D.R. Horton, Inc.	Buy - Position Entry	+6,567,812	-	$271.78K	6,567,812
Q1 2019	GOOG Alphabet Inc.	Alphabet Inc.	Buy - Position Entry	+444,419	-	$521.44K	444,419
Q1 2019	MA Mastercard Incorporated	Mastercard Incorporated	Sell	-153,100	-5.2%	$657.26K	2,791,487
Q1 2019	MELI MercadoLibre, Inc.	MercadoLibre, Inc.	Buy	+216,422	+48.0%	$338.76K	667,206
Q1 2019	META Meta Platforms, Inc.	Meta Platforms, Inc.	Sell	-1,829,084	-27.4%	$806.89K	4,840,683
Q1 2019	MSFT Microsoft Corporation	Microsoft Corporation	Sell	-1,062,033	-10.5%	$1.07M	9,035,031
Q1 2019	NIO NIO Inc.	NIO Inc.	Sell - Position Exit	-3,736,290	-100.0%	$0.00	-
Q1 2019	NOW ServiceNow, Inc.	ServiceNow, Inc.	Sell	-936,223	-35.4%	$420.49K	1,705,894
Q1 2019	PYPL PayPal Holdings, Inc.	PayPal Holdings, Inc.	Sell - Position Exit	-5,762,509	-100.0%	$0.00	-
Q1 2019	SE Sea Limited	Sea Limited	Buy	+3,300,000	+83.3%	$170.83K	7,263,222
Q1 2019	SHOP Shopify Inc.	Shopify Inc.	Buy - Position Entry	+40,000	-	$8.27K	40,000
Q1 2019	SPGI S&P Global Inc.	S&P Global Inc.	Buy - Position Entry	+3,091,361	-	$650.89K	3,091,361
Q1 2019	SQ Block, Inc.	Block, Inc.	Buy - Position Entry	+120,000	-	$8.99K	120,000
Q1 2019	STZ Constellation Brands, Inc.	Constellation Brands, Inc.	Sell	-227,699	-4.4%	$864.81K	4,932,455
Q1 2019	TDG Transdigm Group Incorporated	Transdigm Group Incorporated	Buy	+138,733	+9.1%	$754.19K	1,661,253
Q1 2019	TRU TransUnion	TransUnion	Sell	-3,689,421	-36.4%	$430.14K	6,435,350
Q1 2019	UNP Union Pacific Corporation	Union Pacific Corporation	Buy - Position Entry	+3,313,454	-	$554.01K	3,313,454