William Blair & Company’s iPath Select MLP ETN ATMP Stock Holding History

William Blair & Company’s Portfolio ATMP Stock Details ATMP Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$1M	Buy	29,087 +3,600	+14%	+$116K	﹤0.01%	942
2025 Q4	$733K	Sell	25,487 -1,000	-4%	-$28.4K	﹤0.01%	1020
2025 Q3	$763K	Hold	26,487	–	–	﹤0.01%	988
2025 Q2	$777K	Sell	26,487 -4,456	-14%	-$128K	﹤0.01%	966
2025 Q1	$949K	Buy	30,943 +15,569	+101%	+$471K	﹤0.01%	899
2024 Q4	$435K	Buy	+15,374	New	+$429K	﹤0.01%	1140
2018 Q4	–	Sell	-1,000	Closed	-$21K	–	1662
2018 Q3	$21K	Sell	1,000 -4,435	-82%	-$94.3K	﹤0.01%	1526
2018 Q2	$110K	Hold	5,435	–	–	﹤0.01%	1334
2018 Q1	$100K	Buy	+5,435	New	+$112K	﹤0.01%	1268
2014 Q4	–	Sell	-6,525	Closed	-$211K	–	2110
2014 Q3	$211K	Hold	6,525	–	–	﹤0.01%	1953
2014 Q2	$206K	Buy	+6,525	New	+$193K	﹤0.01%	1939

Other funds holding ATMP

CBU

CIBC Bancorp USA Chicago, Illinois $74.4B AUM

EWA

Exencial Wealth Advisors Oklahoma City, Oklahoma $3.22B AUM 20.17% 1-Year Est. Return

BCI

Brinker Capital Investments Berwyn, Pennsylvania $11.7B AUM 21.33% 1-Year Est. Return

Brown Advisory Baltimore, Maryland $60.9B AUM 15.24% 1-Year Est. Return

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

Susquehanna International Group Bala Cynwyd, Pennsylvania $893B AUM 36.07% 1-Year Est. Return

UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return

Cerity Partners New York $70.8B AUM 21.68% 1-Year Est. Return

BCG

Breakwater Capital Group Paramus, New Jersey $833M AUM 22.71% 1-Year Est. Return

Rockefeller Capital Management New York $56.4B AUM 24.96% 1-Year Est. Return

William Blair & Company's ATMP Position: Q1 2026 in Review

William Blair & Company increased its iPath Select MLP ETN (ATMP) stake by 14% in Q1 2026, buying an estimated $116K and bringing the position to 29,087 shares worth $1M. The position accounts for ﹤0.01% of the portfolio, ranked #942.

William Blair & Company first reported a position in ATMP in Q2 2014 and has held it in 11 quarters since. 38 funds tracked by Wall St. Rank hold ATMP as of Q1 2026.

William Blair & Company held 29,087 shares of iPath Select MLP ETN worth $1M as of Q1 2026.
William Blair & Company bought 3,600 iPath Select MLP ETN shares in Q1 2026, an estimated $116K.
iPath Select MLP ETN made up ﹤0.01% of William Blair & Company's portfolio in Q1 2026, its #942 holding.
William Blair & Company first reported a position in iPath Select MLP ETN in Q2 2014 and has held it in 11 quarters since.
38 funds tracked by Wall St. Rank held iPath Select MLP ETN as of Q1 2026.

Based on William Blair & Company's 13F filing for Q1 2026, filed 8 May 2026.