William Blair & Company
MACK

William Blair & Company’s Merrimack Pharmaceuticals, Inc. MACK Stock Holding History

William Blair & Company’s Portfolio MACK Stock Details MACK Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2017
Q3 		– Sell
-7,506
Closed -$73K – 1589
2017
Q2 		$73K Sell
7,506
-30,510
-80% -$623K ﹤0.01% 1446
2017
Q1 		$918K Sell
38,016
-953
-2% -$23.8K 0.01% 730
2016
Q4 		$1.25M Sell
38,969
-318
-0.8% -$13.6K 0.01% 603
2016
Q3 		$1.96M Buy
39,287
+2,828
+8% +$117K 0.02% 499
2016
Q2 		$1.55M Sell
36,459
-2,224
-6% -$121K 0.01% 519
2016
Q1 		$2.55M Sell
38,683
-349
-0.9% -$18.2K 0.02% 402
2015
Q4 		$2.43M Sell
39,032
-509
-1% -$35.8K 0.02% 421
2015
Q3 		$2.65M Sell
39,541
-6,450
-14% -$526K 0.02% 458
2015
Q2 		$4.47M Buy
45,991
+2,078
+5% +$198K 0.01% 1105
2015
Q1 		$4.1M Sell
43,913
-4,989
-10% -$425K 0.01% 1094
2014
Q4 		$4.35M Sell
48,902
-4,950
-9% -$361K 0.01% 1075
2014
Q3 		$3.72M Buy
53,852
+178
+0.3% +$9.51K 0.01% 1086
2014
Q2 		$3.08M Buy
53,674
+5,430
+11% +$276K 0.01% 1121
2014
Q1 		$1.91M Buy
48,244
+12,897
+36% +$552K ﹤0.01% 1217
2013
Q4 		$1.49M Buy
+35,347
New +$1.02M ﹤0.01% 1267

Other funds holding MACK

Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
TCIM
TIAA CREF Investment Management New York $141B AUM 14.18% 1-Year Est. Return
Franklin Resources
Franklin Resources San Mateo, California $408B AUM 30.18% 1-Year Est. Return
NM
Newtyn Management New York $936M AUM 27.23% 1-Year Est. Return
RCMNY
Rubric Capital Management (New York) New York $9.44B AUM 68.42% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Deutsche Bank
Deutsche Bank Frankfurt Am Main Ge, Germany $303B AUM 30.15% 1-Year Est. Return
Northern Trust
Northern Trust Chicago, Illinois $757B AUM 28.64% 1-Year Est. Return

William Blair & Company's MACK Position: Q3 2017 in Review

William Blair & Company sold out of Merrimack Pharmaceuticals, Inc. (MACK) in Q3 2017, closing a stake of 7,506 shares — an estimated $73K sold.

William Blair & Company first reported a position in MACK in Q4 2013 and held it in 15 quarters. The position peaked at $4.47M in Q2 2015. 73 funds tracked by Wall St. Rank hold MACK as of Q3 2017.

  • William Blair & Company reported no remaining Merrimack Pharmaceuticals, Inc. position as of Q3 2017 after selling out during the quarter.
  • William Blair & Company sold 7,506 Merrimack Pharmaceuticals, Inc. shares in Q3 2017, an estimated $73K.
  • William Blair & Company first reported a position in Merrimack Pharmaceuticals, Inc. in Q4 2013 and held it in 15 quarters.
  • William Blair & Company's Merrimack Pharmaceuticals, Inc. position peaked at $4.47M in Q2 2015.
  • 73 funds tracked by Wall St. Rank held Merrimack Pharmaceuticals, Inc. as of Q3 2017.

Based on William Blair & Company's 13F filing for Q3 2017, filed 13 Nov 2017.