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 08/15/19 CONVERTIBLE 30161QAC8 545 550,000 PRN   SOLE   550,000 0 0
Intel Corp., 2.95%, due 12/15/35 CONVERTIBLE 458140AD2 1,588 1,250,000 PRN   SOLE   1,250,000 0 0
Micron Technology Inc., 3.00%, due 11/15/43 CONVERTIBLE 595112AY9 511 750,000 PRN   SOLE   750,000 0 0
AGL Resources Inc. COMMON STOCK 001204106 8,794 135,000 SH   SOLE   135,000 0 0
Air Lease Corp. COMMON STOCK 00912X302 29,245 910,500 SH   SOLE   910,500 0 0
Alibaba Group Holding Ltd. (ADR) COMMON STOCK 01609W102 474 6,000 SH   SOLE   6,000 0 0
Allergan plc COMMON STOCK G0177J108 299,256 1,116,502 SH   SOLE   1,072,841 0 43,661
Alphabet Inc., Class A COMMON STOCK 02079K305 235,136 308,213 SH   SOLE   298,033 0 10,180
Alphabet Inc., Class C COMMON STOCK 02079K107 386,698 519,093 SH   SOLE   497,654 0 21,439
American Express Co. COMMON STOCK 025816109 98,240 1,600,000 SH   SOLE   1,600,000 0 0
Apple Inc. COMMON STOCK 037833100 381,424 3,499,620 SH   SOLE   3,359,157 0 140,463
Applied Materials Inc. COMMON STOCK 038222105 518,429 24,477,269 SH   SOLE   23,750,249 0 727,020
Autodesk Inc. COMMON STOCK 052769106 86,007 1,475,000 SH   SOLE   1,475,000 0 0
Axalta Coating Systems Ltd. COMMON STOCK G0750C108 30,806 1,055,000 SH   SOLE   1,055,000 0 0
Belmond Ltd. COMMON STOCK G1154H107 4,745 500,000 SH   SOLE   500,000 0 0
C.H. Robinson Worldwide Inc. COMMON STOCK 12541W209 29,692 400,000 SH   SOLE   400,000 0 0
Calgon Carbon Corp. COMMON STOCK 129603106 12,127 865,000 SH   SOLE   865,000 0 0
Capital One Financial Corp. COMMON STOCK 14040H105 17,328 250,000 SH   SOLE   250,000 0 0
Cardinal Health Inc. COMMON STOCK 14149Y108 18,849 230,000 SH   SOLE   230,000 0 0
Charles Schwab Corp. COMMON STOCK 808513105 536,195 19,136,152 SH   SOLE   18,540,191 0 595,961
Ciena Corp. COMMON STOCK 171779309 106,512 5,600,000 SH   SOLE   5,600,000 0 0
Citrix Systems Inc. COMMON STOCK 177376100 51,077 650,000 SH   SOLE   650,000 0 0
Compass Minerals International Inc. COMMON STOCK 20451N101 172,559 2,435,215 SH   SOLE   2,349,843 0 85,372
Cummins Inc. COMMON STOCK 231021106 71,461 650,000 SH   SOLE   650,000 0 0
CVS Health Corp. COMMON STOCK 126650100 396,348 3,820,962 SH   SOLE   3,663,283 0 157,679
Danaher Corp. COMMON STOCK 235851102 623,154 6,569,196 SH   SOLE   6,305,717 0 263,479
Deere & Co. COMMON STOCK 244199105 256,580 3,332,638 SH   SOLE   3,248,233 0 84,405
Dentsply Sirona Inc. COMMON STOCK 24906P109 15,359 249,215 SH   SOLE   249,215 0 0
eBay Inc. COMMON STOCK 278642103 303,278 12,710,734 SH   SOLE   12,255,023 0 455,711
Ecolab Inc. COMMON STOCK 278865100 3,981 35,700 SH   SOLE   35,700 0 0
Equifax Inc. COMMON STOCK 294429105 11,429 100,000 SH   SOLE   100,000 0 0
Essent Group Ltd. COMMON STOCK G3198U102 16,640 800,000 SH   SOLE   800,000 0 0
Expeditors International of Washington Inc. COMMON STOCK 302130109 71,238 1,459,500 SH   SOLE   1,459,500 0 0
FedEx Corp. COMMON STOCK 31428X106 10,577 65,000 SH   SOLE   65,000 0 0
First American Financial Corp. COMMON STOCK 31847R102 3,811 100,000 SH   SOLE   100,000 0 0
First Horizon National Corp. COMMON STOCK 320517105 29,462 2,249,000 SH   SOLE   2,249,000 0 0
Fiserv Inc. COMMON STOCK 337738108 17,952 175,000 SH   SOLE   175,000 0 0
Gilead Sciences Inc. COMMON STOCK 375558103 534,644 5,820,200 SH   SOLE   5,643,615 0 176,585
Insperity Inc. COMMON STOCK 45778Q107 22,244 430,000 SH   SOLE   430,000 0 0
Intel Corp. COMMON STOCK 458140100 517,916 16,009,781 SH   SOLE   15,448,154 0 561,627
International Business Machines Corp. COMMON STOCK 459200101 107,530 710,000 SH   SOLE   710,000 0 0
Iron Mountain Inc. COMMON STOCK 46284V101 407,737 12,024,081 SH   SOLE   11,557,419 0 466,662
Lam Research Corp. COMMON STOCK 512807108 49,560 600,000 SH   SOLE   600,000 0 0
Linear Technology Corp. COMMON STOCK 535678106 356 8,000 SH   SOLE   8,000 0 0
MasterCard Inc., Class A COMMON STOCK 57636Q104 280,835 2,971,796 SH   SOLE   2,848,909 0 122,887
McCormick & Co. COMMON STOCK 579780206 281,052 2,825,210 SH   SOLE   2,713,968 0 111,242
McKesson Corp. COMMON STOCK 58155Q103 12,580 80,000 SH   SOLE   80,000 0 0
MDU Resources Group Inc. COMMON STOCK 552690109 247,012 12,693,337 SH   SOLE   12,206,067 0 487,270
Micron Technology Inc. COMMON STOCK 595112103 268,483 25,643,110 SH   SOLE   24,984,523 0 658,587
Mondelez International Inc., Class A COMMON STOCK 609207105 477,805 11,909,391 SH   SOLE   11,440,597 0 468,794
Motorola Solutions Inc. COMMON STOCK 620076307 445,242 5,881,668 SH   SOLE   5,664,727 0 216,941
National Oilwell Varco Inc. COMMON STOCK 637071101 357,968 11,510,235 SH   SOLE   11,065,795 0 444,440
Northwest Natural Gas Co. COMMON STOCK 667655104 55,756 1,035,400 SH   SOLE   1,001,422 0 33,978
Novartis AG (ADR) COMMON STOCK 66987V109 156,338 2,158,172 SH   SOLE   2,068,145 0 90,027
Patterson Companies Inc. COMMON STOCK 703395103 294,615 6,331,716 SH   SOLE   6,095,383 0 236,333
PayPal Holdings Inc. COMMON STOCK 70450Y103 333,135 8,630,428 SH   SOLE   8,287,705 0 342,723
Pentair plc COMMON STOCK G7S00T104 415,002 7,648,397 SH   SOLE   7,360,554 0 287,843
PepsiCo Inc. COMMON STOCK 713448108 322,718 3,149,083 SH   SOLE   3,020,398 0 128,685
Perrigo Co. plc COMMON STOCK G97822103 457,547 3,576,540 SH   SOLE   3,475,034 0 101,506
Plantronics Inc. COMMON STOCK 727493108 30,372 775,000 SH   SOLE   775,000 0 0
Potash Corporation of Saskatchewan Inc. COMMON STOCK 73755L107 18,722 1,100,000 SH   SOLE   1,100,000 0 0
Praxair Inc. COMMON STOCK 74005P104 425,975 3,721,935 SH   SOLE   3,573,546 0 148,389
Procter & Gamble Co. COMMON STOCK 742718109 406,082 4,933,566 SH   SOLE   4,734,222 0 199,344
Progressive Corp. COMMON STOCK 743315103 17,570 500,000 SH   SOLE   500,000 0 0
QUALCOMM Inc. COMMON STOCK 747525103 86,017 1,682,000 SH   SOLE   1,682,000 0 0
Questar Corp. COMMON STOCK 748356102 351,662 14,179,919 SH   SOLE   13,628,375 0 551,544
Redwood Trust Inc. COMMON STOCK 758075402 14,388 1,100,000 SH   SOLE   1,100,000 0 0
Roche Holdings Ltd. (ADR) COMMON STOCK 771195104 9,034 295,000 SH   SOLE   295,000 0 0
SanDisk Corp. COMMON STOCK 80004C101 104,610 1,375,000 SH   SOLE   1,375,000 0 0
SEI Investments Co. COMMON STOCK 784117103 17,220 400,000 SH   SOLE   400,000 0 0
Shaw Communications Inc., Class B COMMON STOCK 82028K200 76,817 3,978,112 SH   SOLE   3,805,451 0 172,661
Sysco Corp. COMMON STOCK 871829107 414,627 8,872,815 SH   SOLE   8,525,416 0 347,399
Taiwan Semiconductor Manufacturing Co., Ltd. (ADR) COMMON STOCK 874039100 262 10,000 SH   SOLE   10,000 0 0
Teleflex Inc. COMMON STOCK 879369106 9,028 57,500 SH   SOLE   57,500 0 0
Thomson Reuters Corp. COMMON STOCK 884903105 363,177 8,971,775 SH   SOLE   8,649,887 0 321,888
Trimble Navigation Ltd. COMMON STOCK 896239100 22,320 900,000 SH   SOLE   900,000 0 0
United Parcel Service Inc., Class B COMMON STOCK 911312106 433,702 4,112,089 SH   SOLE   3,945,114 0 166,975
Verisk Analytics Inc. COMMON STOCK 92345Y106 351,172 4,394,046 SH   SOLE   4,221,705 0 172,341
VF Corp. COMMON STOCK 918204108 413,585 6,386,426 SH   SOLE   6,143,103 0 243,323
W.W. Grainger Inc. COMMON STOCK 384802104 32,680 140,000 SH   SOLE   140,000 0 0
Waste Management Inc. COMMON STOCK 94106L109 298,895 5,066,021 SH   SOLE   4,869,717 0 196,304
WD-40 Co. COMMON STOCK 929236107 142,741 1,321,554 SH   SOLE   1,262,449 0 59,105
Wells Fargo & Co. COMMON STOCK 949746101 60,450 1,250,000 SH   SOLE   1,250,000 0 0
WhiteWave Foods Co. COMMON STOCK 966244105 6,096 150,000 SH   SOLE   150,000 0 0
Whole Foods Market Inc. COMMON STOCK 966837106 101,108 3,250,000 SH   SOLE   3,250,000 0 0
Xylem Inc. COMMON STOCK 98419M100 462,545 11,309,169 SH   SOLE   10,870,894 0 438,275