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
OMB APPROVAL
OMB Number: 3235-0006
Estimated average burden
hours per response: 23.8
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
BARCLAYS BK PLC CONV ZERO CPN Convertible Bonds 06741JV89 42 46,000 PRN   SOLE 0 46,000 0 0
APPLE INC. Common Stocks 037833100 11,523 73,049 SH   SOLE 0 73,049 0 0
ABB LIMITED Common Stocks 000375204 8,283 435,708 SH   SOLE 0 435,708 0 0
ACCENTURE PLC Common Stocks G1151C101 6,994 49,597 SH   SOLE 0 49,597 0 0
AEGON N.V. ADR Common Stocks 007924103 107 23,000 SH   SOLE 0 23,000 0 0
AMGEN INC Common Stocks 031162100 292 1,500 SH   SOLE 0 1,500 0 0
AMAZON COM INC Common Stocks 023135106 269 179 SH   SOLE 0 179 0 0
BRISTOL-MYERS SQUIBB CO Common Stocks 110122108 7,815 150,339 SH   SOLE 0 150,339 0 0
BLACK STONE MINERALS LP Common Stocks 09225M101 271 17,529 SH   SOLE 0 17,529 0 0
CELGENE CORPORATION Common Stocks 151020104 13,856 216,197 SH   SOLE 0 216,197 0 0
CHECK POINT SOFTWARE TECH Common Stocks M22465104 10,975 106,917 SH   SOLE 0 106,917 0 0
CISCO SYSTEMS, INC. Common Stocks 17275R102 283 6,522 SH   SOLE 0 6,522 0 0
DELL INC Common Stocks 24702R101 6,195 126,759 SH   SOLE 0 126,759 0 0
DISH NETWORK CORP Common Stocks 25470M109 225 9,025 SH   SOLE 0 9,025 0 0
DORCHESTER MINERALS LP Common Stocks 25820R105 659 45,030 SH   SOLE 0 45,030 0 0
EBAY INC Common Stocks 278642103 8,010 285,350 SH   SOLE 0 285,350 0 0
ENTERPRISE PRODUCTS PRTNS Common Stocks 293792107 25,995 1,057,134 SH   SOLE 0 1,057,134 0 0
ENERGY TRANSFER EQUITY L P Common Stocks 29273V100 234 17,733 SH   SOLE 0 17,733 0 0
GENERAL ELECTRIC Common Stocks 369604103 138 18,254 SH   SOLE 0 18,254 0 0
GILEAD SCIENCES, INC Common Stocks 375558103 11,183 178,781 SH   SOLE 0 178,781 0 0
ALPHABET INC CL C (GOOGLE C) Common Stocks 02079K107 28,839 27,847 SH   SOLE 0 27,847 0 0
ALPHABET INC CL A (GOOGLE A) Common Stocks 02079K305 17,836 17,069 SH   SOLE 0 17,069 0 0
HONEYWELL INTL INC Common Stocks 438516106 1,648 12,477 SH   SOLE 0 12,477 0 0
INOVALON HOLDINGS INC. (Class A) Common Stocks 45781D101 6,058 427,248 SH   SOLE 0 427,248 0 0
KINDER MORGAN, INC. Common Stocks 49456B101 17,208 1,118,866 SH   SOLE 0 1,118,866 0 0
LAS VEGAS SANDS Common Stocks 517834107 9,042 173,721 SH   SOLE 0 173,721 0 0
MATADOR RESOURCES CO. Common Stocks 576485205 699 45,000 SH   SOLE 0 45,000 0 0
NOBLE ENERGY INC Common Stocks 655044105 3,113 165,930 SH   SOLE 0 165,930 0 0
NIELSEN HOLDINGS PLC Common Stocks G6518L108 19,794 848,428 SH   SOLE 0 848,428 0 0
NXP SEMICONDUCT Common Stocks N6596X109 762 10,400 SH   SOLE 0 10,400 0 0
OWENS & MINOR, INC. Common Stocks 690732102 89 14,000 SH   SOLE 0 14,000 0 0
PAYCHEX INC. Common Stocks 704326107 365 5,600 SH   SOLE 0 5,600 0 0
QUALCOMM INC Common Stocks 747525103 26,178 459,988 SH   SOLE 0 459,988 0 0
SCHLUMBERGER LTD Common Stocks 806857108 438 12,141 SH   SOLE 0 12,141 0 0
VISA, INC. Common Stocks 92826C839 581 4,400 SH   SOLE 0 4,400 0 0
WALGREENS BOOTS ALLIANCE Common Stocks 931427108 239 3,500 SH   SOLE 0 3,500 0 0
WESTERN GAS PARTNERS, LP Common Stocks 958254104 232 5,500 SH   SOLE 0 5,500 0 0
XYLEM INC. Common Stocks 98419M100 10,933 163,864 SH   SOLE 0 163,864 0 0