Three Bays Capital’s Summit Materials, Inc. Class A Common Stock SUM Stock Holding History

Three Bays Capital’s Portfolio SUM Stock Details SUM Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2018 Q4	–	Sell	-4,645,656	Closed	-$83M	–	16
2018 Q3	$83M	Buy	4,645,656 +202,077	+5%	+$4.4M	9.79%	1
2018 Q2	$115M	Buy	4,443,579 +1,740,705	+64%	+$48.5M	4.46%	4
2018 Q1	$80.5M	Sell	2,702,874 -1,421,286	-34%	-$43.8M	5.58%	4
2017 Q4	$127M	Buy	4,124,160 +269,354	+7%	+$8.11M	7.17%	4
2017 Q3	$120M	Buy	3,854,806 +1,145,242	+42%	+$32.5M	8.9%	3
2017 Q2	$75.9M	Buy	+2,709,564	New	+$70.5M	6.04%	6

Other funds holding SUM

SAM

Southeastern Asset Management Memphis, Tennessee $1.92B AUM 6.41% 1-Year Est. Return

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

Janus Henderson Group London $209B AUM 37.72% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Adage Capital Partners Boston, Massachusetts $71.3B AUM 56.8% 1-Year Est. Return

Jennison Associates New York $167B AUM 44.17% 1-Year Est. Return

Principal Financial Group Des Moines, Iowa $204B AUM 27.99% 1-Year Est. Return

Putnam Investments Boston, Massachusetts $75.7B AUM 34.45% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

TCM

TimesSquare Capital Management New York $6.8B AUM 45.85% 1-Year Est. Return

Three Bays Capital's SUM Position: Q4 2018 in Review

Three Bays Capital sold out of Summit Materials, Inc. Class A Common Stock (SUM) in Q4 2018, closing a stake of 4,645,656 shares — an estimated $83M sold.

Three Bays Capital first reported a position in SUM in Q2 2017 and held it in 6 quarters. The position peaked at $127M in Q4 2017. 197 funds tracked by Wall St. Rank hold SUM as of Q4 2018.

Three Bays Capital reported no remaining Summit Materials, Inc. Class A Common Stock position as of Q4 2018 after selling out during the quarter.
Three Bays Capital sold 4,645,656 Summit Materials, Inc. Class A Common Stock shares in Q4 2018, an estimated $83M.
Three Bays Capital first reported a position in Summit Materials, Inc. Class A Common Stock in Q2 2017 and held it in 6 quarters.
Three Bays Capital's Summit Materials, Inc. Class A Common Stock position peaked at $127M in Q4 2017.
197 funds tracked by Wall St. Rank held Summit Materials, Inc. Class A Common Stock as of Q4 2018.

Based on Three Bays Capital's 13F filing for Q4 2018.