Dark
Light
System
Security
NORTHWESTERN CORP
NORTHWESTERN CORP. Institutional holdings reported to the SEC.

Institutional Holders (2015Q4)
Portfolio Summary: 210 Institutional holders with a total value of $2,660,426,526.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 BlackRock Fund Advisors 6,084,041 330,059,000 12.41%
2 DEUTSCHE BANK AG\ 4,182,384 226,892,000 8.53%
3 VANGUARD GROUP INC 3,771,534 204,606,000 7.69%
4 PRICE T ROWE ASSOCIATES INC /MD/ 2,054,955 111,481,000 4.19%
5 MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 1,745,689 94,703,000 3.56%
6 JPMORGAN CHASE & CO 1,593,149 86,428,000 3.25%
7 VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P. 1,588,375 86,170,000 3.24%
8 VICTORY CAPITAL MANAGEMENT INC 1,379,079 74,814,000 2.81%
9 GOLDMAN SACHS GROUP INC 1,328,964 72,096,000 2.71%
10 Bank of New York Mellon Corp 1,304,575 70,773,000 2.66%
11 MACQUARIE GROUP LTD 1,221,372 66,259,000 2.49%
12 BlackRock Institutional Trust Company, N.A. 1,171,724 63,566,000 2.39%
13 SCHRODER INVESTMENT MANAGEMENT GROUP 1,090,016 59,133,000 2.22%
14 STATE STREET CORP 1,037,683 56,297,000 2.12%
15 NORTHERN TRUST CORP 1,036,827 56,248,000 2.11%
16 AMERICAN CENTURY COMPANIES INC 973,468 52,811,000 1.99%
17 DIMENSIONAL FUND ADVISORS LP 900,701 48,865,000 1.84%
18 GW&K Investment Management, LLC 849,833 46,103,000 1.73%
19 THOMPSON SIEGEL & WALMSLEY LLC 848,272 46,018,000 1.73%
20 KEELEY ASSET MANAGEMENT CORP 758,724 41,161,000 1.55%
21 GABELLI FUNDS LLC 731,500 39,684,000 1.49%
22 FRANKLIN RESOURCES INC 596,800 32,376,000 1.22%
23 SYSTEMATIC FINANCIAL MANAGEMENT LP 511,936 27,772,000 1.04%
24 CORTLAND ADVISERS LLC 500,000 27,125,000 1.02%
25 TIVERTON ASSET MANAGEMENT LLC 425,000 23,056,000 0.87%
26 VIRTUS CAPITAL ADVISERS, LLC 415,207 22,525,000 0.85%
27 TEACHERS ADVISORS, LLC 385,769 20,928,000 0.79%
28 GAMCO INVESTORS, INC. ET AL 379,700 20,599,000 0.77%
29 CHARTWELL INVESTMENT PARTNERS, LLC 376,157 20,407,000 0.77%
30 INVESTMENT COUNSELORS OF MARYLAND LLC 372,863 20,228,000 0.76%
31 LOOMIS SAYLES & CO L P 363,720 19,732,000 0.74%
32 RS INVESTMENT MANAGEMENT CO LLC 351,126 19,049,000 0.72%
33 FIRST MANHATTAN CO. LLC. 330,658 17,938,000 0.67%
34 PRINCIPAL FINANCIAL GROUP INC 326,351 17,704,000 0.67%
35 RUSSELL FRANK CO/ 314,115 17,342,000 0.65%
36 NORGES BANK 314,814 17,079,000 0.64%
37 GEODE CAPITAL MANAGEMENT, LLC 303,326 16,455,000 0.62%
38 CRAMER ROSENTHAL MCGLYNN LLC 302,647 16,419,000 0.62%
39 ROYAL BANK OF CANADA 269,910 14,643,000 0.55%
40 Personal Capital Advisors Corp 259,574 14,082,000 0.53%
41 AMERIPRISE FINANCIAL INC 222,399 12,066,000 0.45%
42 BlackRock Investment Management, LLC 209,216 11,350,000 0.43%
43 Monarch Partners Asset Management LLC 208,274 11,299,000 0.42%
44 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 204,609 11,101,000 0.42%
45 Invesco Ltd. 200,994 10,904,000 0.41%
46 BANK OF AMERICA CORP /DE/ 180,805 9,808,000 0.37%
47 FIRST PREMIER BANK 170,553 9,253,000 0.35%
48 NEW YORK STATE COMMON RETIREMENT FUND 165,150 8,959,000 0.34%
49 NATIXIS ADVISORS, LLC 162,630 8,822,000 0.33%
50 WESTWOOD HOLDINGS GROUP INC 159,303 8,642,000 0.32%
Page 1 of 5

From 2023-01-03 onward, the SEC requires values to be reported in nearest dollars. Earlier filings reported values in thousands; therefore, positions shown as $0 in older filings may represent actual values between $0–$999.