The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.
The reader should not assume that the information is accurate and complete.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F INFORMATION TABLE
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COLUMN 1 COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 COLUMN 6 COLUMN 7 COLUMN 8
VALUE SHRS OR SH/ PUT/ INVESTMENT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (x$1000) PRN AMT PRN CALL DISCRETION MANAGER SOLE SHARED NONE
Exelixis Inc., 4.25%, due 08/15/2019 CONVERTIBLE 30161QAC8 486 550,000 PRN   SOLE   550,000 0 0
Microchip Tech., 1.63%, due 02/15/2025 CONVERTIBLE 595017AC8 1,009 1,000,000 PRN   SOLE   1,000,000 0 0
Accenture plc, Class A COMMON STOCK G1151C101 213,509 2,206,130 SH   SOLE   2,129,556 0 76,574
AGL Resources Inc. COMMON STOCK 001204106 130,877 2,810,940 SH   SOLE   2,722,273 0 88,667
Air Lease Corp. COMMON STOCK 00912X302 37,782 1,114,500 SH   SOLE   1,114,500 0 0
Alibaba Group Holding Ltd. (ADR) COMMON STOCK 01609W102 206 2,500 SH   SOLE   2,500 0 0
Allergan plc COMMON STOCK G0177J108 384,963 1,268,579 SH   SOLE   1,226,053 0 42,526
Altera Corp. COMMON STOCK 021441100 179,863 3,512,950 SH   SOLE   3,512,950 0 0
American Express Co. COMMON STOCK 025816109 77,720 1,000,000 SH   SOLE   1,000,000 0 0
Apple Inc. COMMON STOCK 037833100 321,272 2,561,465 SH   SOLE   2,471,446 0 90,019
Applied Materials Inc. COMMON STOCK 038222105 347,411 18,075,478 SH   SOLE   17,630,473 0 445,005
Autodesk Inc. COMMON STOCK 052769106 30,796 615,000 SH   SOLE   615,000 0 0
Belmond Ltd. COMMON STOCK G1154H107 20,450 1,637,342 SH   SOLE   1,637,342 0 0
C.H. Robinson Worldwide Inc. COMMON STOCK 12541W209 37,434 600,000 SH   SOLE   600,000 0 0
Calgon Carbon Corp. COMMON STOCK 129603106 12,782 659,528 SH   SOLE   659,528 0 0
Cameron International Corp. COMMON STOCK 13342B105 9,558 182,500 SH   SOLE   182,500 0 0
Capital One Financial Corp. COMMON STOCK 14040H105 35,188 400,000 SH   SOLE   400,000 0 0
Cardinal Health Inc. COMMON STOCK 14149Y108 12,966 155,000 SH   SOLE   155,000 0 0
Charles Schwab Corp. COMMON STOCK 808513105 401,322 12,291,649 SH   SOLE   11,930,938 0 360,711
Checkpoint Systems Inc. COMMON STOCK 162825103 7,453 732,120 SH   SOLE   732,120 0 0
Ciena Corp. COMMON STOCK 171779309 71,040 3,000,000 SH   SOLE   3,000,000 0 0
Citrix Systems Inc. COMMON STOCK 177376100 66,652 950,000 SH   SOLE   950,000 0 0
Compass Minerals International Inc. COMMON STOCK 20451N101 191,168 2,327,343 SH   SOLE   2,258,355 0 68,988
CVS Health Corp. COMMON STOCK 126650100 377,776 3,601,980 SH   SOLE   3,476,473 0 125,507
Danaher Corp. COMMON STOCK 235851102 532,910 6,226,313 SH   SOLE   6,011,346 0 214,967
Deere & Co. COMMON STOCK 244199105 197,808 2,038,212 SH   SOLE   2,031,521 0 6,691
DENTSPLY International Inc. COMMON STOCK 249030107 14,950 290,000 SH   SOLE   290,000 0 0
Dominion Diamond Corp. COMMON STOCK 257287102 6,375 455,000 SH   SOLE   455,000 0 0
eBay Inc. COMMON STOCK 278642103 460,519 7,644,743 SH   SOLE   7,408,496 0 236,247
Ecolab Inc. COMMON STOCK 278865100 2,374 21,000 SH   SOLE   21,000 0 0
Energen Corp. COMMON STOCK 29265N108 6,454 94,500 SH   SOLE   94,500 0 0
Equifax Inc. COMMON STOCK 294429105 6,796 70,000 SH   SOLE   70,000 0 0
Essent Group Ltd. COMMON STOCK G3198U102 37,579 1,374,002 SH   SOLE   1,374,002 0 0
Expeditors International of Washington Inc. COMMON STOCK 302130109 362,723 7,867,315 SH   SOLE   7,647,963 0 219,352
EZchip Semiconductor Ltd. COMMON STOCK M4146Y108 11,970 750,000 SH   SOLE   750,000 0 0
First American Financial Corp. COMMON STOCK 31847R102 14,140 380,000 SH   SOLE   380,000 0 0
First Horizon National Corp. COMMON STOCK 320517105 56,412 3,600,000 SH   SOLE   3,600,000 0 0
Fiserv Inc. COMMON STOCK 337738108 12,425 150,000 SH   SOLE   150,000 0 0
Genesee & Wyoming Inc., Class A COMMON STOCK 371559105 14,627 192,000 SH   SOLE   192,000 0 0
GenMark Diagnostics Inc. COMMON STOCK 372309104 4,661 514,500 SH   SOLE   514,500 0 0
Gilead Sciences Inc. COMMON STOCK 375558103 449,786 3,841,701 SH   SOLE   3,718,432 0 123,269
Google Inc., Class A COMMON STOCK 38259P508 192,038 355,600 SH   SOLE   348,381 0 7,219
Google Inc., Class C COMMON STOCK 38259P706 355,394 682,781 SH   SOLE   658,441 0 24,340
Group 1 Automotive Inc. COMMON STOCK 398905109 13,152 144,800 SH   SOLE   144,800 0 0
Insperity Inc. COMMON STOCK 45778Q107 13,998 275,000 SH   SOLE   275,000 0 0
Intel Corp. COMMON STOCK 458140100 67,825 2,230,000 SH   SOLE   2,230,000 0 0
International Business Machines Corp. COMMON STOCK 459200101 91,090 560,000 SH   SOLE   560,000 0 0
Intuit Inc. COMMON STOCK 461202103 3,023 30,000 SH   SOLE   30,000 0 0
Iron Mountain Inc. COMMON STOCK 46284V101 350,273 11,299,124 SH   SOLE   10,921,326 0 377,798
Lam Research Corp. COMMON STOCK 512807108 8,135 100,000 SH   SOLE   100,000 0 0
Linear Technology Corp. COMMON STOCK 535678106 243 5,500 SH   SOLE   5,500 0 0
LinkedIn Corp. COMMON STOCK 53578A108 28,928 140,000 SH   SOLE   140,000 0 0
MasterCard Inc., Class A COMMON STOCK 57636Q104 263,169 2,815,239 SH   SOLE   2,715,975 0 99,264
McCormick & Co. COMMON STOCK 579780206 217,132 2,682,301 SH   SOLE   2,592,206 0 90,095
MDU Resources Group Inc. COMMON STOCK 552690109 201,705 10,327,966 SH   SOLE   9,990,178 0 337,788
Mindray Medical International Ltd. (ADR) COMMON STOCK 602675100 342 12,000 SH   SOLE   12,000 0 0
Mondelez International Inc., Class A COMMON STOCK 609207105 482,577 11,730,116 SH   SOLE   11,350,595 0 379,521
Motorola Solutions Inc. COMMON STOCK 620076307 501,303 8,742,638 SH   SOLE   8,481,739 0 260,899
National Oilwell Varco Inc. COMMON STOCK 637071101 345,858 7,163,597 SH   SOLE   6,935,170 0 228,427
Nordstrom Inc. COMMON STOCK 655664100 1,676 22,500 SH   SOLE   22,500 0 0
Northwest Natural Gas Co. COMMON STOCK 667655104 108,183 2,564,785 SH   SOLE   2,478,152 0 86,633
Novartis AG (ADR) COMMON STOCK 66987V109 259,650 2,640,330 SH   SOLE   2,549,589 0 90,741
Patterson Companies Inc. COMMON STOCK 703395103 255,346 5,248,640 SH   SOLE   5,072,560 0 176,080
Pentair plc COMMON STOCK G7S00T104 490,683 7,137,204 SH   SOLE   6,904,133 0 233,071
PepsiCo Inc. COMMON STOCK 713448108 311,848 3,340,985 SH   SOLE   3,228,191 0 112,794
Perrigo Co. plc COMMON STOCK G97822103 334,598 1,810,300 SH   SOLE   1,766,752 0 43,548
Plantronics Inc. COMMON STOCK 727493108 34,232 607,924 SH   SOLE   607,924 0 0
Potash Corporation of Saskatchewan Inc. COMMON STOCK 73755L107 13,937 450,000 SH   SOLE   450,000 0 0
Praxair Inc. COMMON STOCK 74005P104 349,953 2,927,255 SH   SOLE   2,825,886 0 101,369
Procter & Gamble Co. COMMON STOCK 742718109 377,947 4,830,611 SH   SOLE   4,668,125 0 162,486
Progressive Corp. COMMON STOCK 743315103 16,698 600,000 SH   SOLE   600,000 0 0
QUALCOMM Inc. COMMON STOCK 747525103 276,142 4,409,095 SH   SOLE   4,298,508 0 110,587
Questar Corp. COMMON STOCK 748356102 209,223 10,005,876 SH   SOLE   9,692,428 0 313,448
Redwood Trust Inc. COMMON STOCK 758075402 12,560 800,000 SH   SOLE   800,000 0 0
Regal Beloit Corp. COMMON STOCK 758750103 7,985 110,000 SH   SOLE   110,000 0 0
Roche Holdings Ltd. (ADR) COMMON STOCK 771195104 47,345 1,350,000 SH   SOLE   1,350,000 0 0
SanDisk Corp. COMMON STOCK 80004C101 34,932 600,000 SH   SOLE   600,000 0 0
SEI Investments Co. COMMON STOCK 784117103 19,813 404,095 SH   SOLE   404,095 0 0
Shaw Communications Inc., Class B COMMON STOCK 82028K200 300,232 13,778,451 SH   SOLE   13,350,116 0 428,335
Sotheby's COMMON STOCK 835898107 13,572 300,000 SH   SOLE   300,000 0 0
Synopsys Inc. COMMON STOCK 871607107 9,922 195,900 SH   SOLE   195,900 0 0
Sysco Corp. COMMON STOCK 871829107 305,150 8,452,904 SH   SOLE   8,171,613 0 281,291
Taiwan Semiconductor Manufacturing Co., Ltd. (ADR) COMMON STOCK 874039100 454 20,000 SH   SOLE   20,000 0 0
Teleflex Inc. COMMON STOCK 879369106 7,788 57,500 SH   SOLE   57,500 0 0
Thomson Reuters Corp. COMMON STOCK 884903105 324,074 8,512,595 SH   SOLE   8,253,100 0 259,495
Trimble Navigation Ltd. COMMON STOCK 896239100 16,422 700,000 SH   SOLE   700,000 0 0
United Parcel Service Inc., Class B COMMON STOCK 911312106 378,093 3,901,484 SH   SOLE   3,766,324 0 135,160
Verisk Analytics Inc. COMMON STOCK 92345Y106 268,095 3,684,647 SH   SOLE   3,559,481 0 125,166
W.W. Grainger Inc. COMMON STOCK 384802104 57,979 245,000 SH   SOLE   245,000 0 0
Waste Management Inc. COMMON STOCK 94106L109 219,565 4,737,118 SH   SOLE   4,578,631 0 158,487
WD-40 Co. COMMON STOCK 929236107 108,966 1,250,189 SH   SOLE   1,202,514 0 47,675
Wells Fargo & Co. COMMON STOCK 949746101 61,864 1,100,000 SH   SOLE   1,100,000 0 0
Whole Foods Market Inc. COMMON STOCK 966837106 78,880 2,000,000 SH   SOLE   2,000,000 0 0
Xylem Inc. COMMON STOCK 98419M100 376,135 10,146,624 SH   SOLE   9,833,689 0 312,935