The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete. | |||||||||||||||||
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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 |
| BARCLAYS BK PLC CONV ZERO CPN | Convertible Bonds | 06741JV89 | 46 | 46,000 | PRN | SOLE | 0 | 46,000 | 0 | 0 | |
| APPLE INC. | Common Stocks | 037833100 | 32,532 | 237,527 | SH | SOLE | 0 | 237,527 | 0 | 0 | |
| ABB LIMITED | Common Stocks | 000375204 | 17,262 | 507,861 | SH | SOLE | 0 | 507,861 | 0 | 0 | |
| ACCENTURE PLC | Common Stocks | G1151C101 | 11,849 | 40,195 | SH | SOLE | 0 | 40,195 | 0 | 0 | |
| AMGEN INC | Common Stocks | 031162100 | 374 | 1,534 | SH | SOLE | 0 | 1,534 | 0 | 0 | |
| AMAZON COM INC | Common Stocks | 023135106 | 1,011 | 294 | SH | SOLE | 0 | 294 | 0 | 0 | |
| ARK GENOMIC REVOLUTION ETF | Common Stocks | 00214Q302 | 222 | 2,400 | SH | SOLE | 0 | 2,400 | 0 | 0 | |
| ACTIVISION BLIZZARD, INC. | Common Stocks | 00507V109 | 20,974 | 219,763 | SH | SOLE | 0 | 219,763 | 0 | 0 | |
| BRISTOL-MYERS SQUIBB CO | Common Stocks | 110122108 | 27,831 | 416,509 | SH | SOLE | 0 | 416,509 | 0 | 0 | |
| BLACK STONE MINERALS LP | Common Stocks | 09225M101 | 12,806 | 1,191,258 | SH | SOLE | 0 | 1,191,258 | 0 | 0 | |
| ANHEUSER-BUSCH INBEV SA | Common Stocks | 03524A108 | 19,694 | 273,496 | SH | SOLE | 0 | 273,496 | 0 | 0 | |
| BLACKSTONE GROUP LP | Common Stocks | 09260D107 | 282 | 2,900 | SH | SOLE | 0 | 2,900 | 0 | 0 | |
| CHECK POINT SOFTWARE TECH | Common Stocks | M22465104 | 10,370 | 89,298 | SH | SOLE | 0 | 89,298 | 0 | 0 | |
| DORCHESTER MINERALS LP | Common Stocks | 25820R105 | 571 | 33,880 | SH | SOLE | 0 | 33,880 | 0 | 0 | |
| EBAY INC | Common Stocks | 278642103 | 16,861 | 240,144 | SH | SOLE | 0 | 240,144 | 0 | 0 | |
| ENTERPRISE PRODUCTS PRTNS | Common Stocks | 293792107 | 28,430 | 1,178,203 | SH | SOLE | 0 | 1,178,203 | 0 | 0 | |
| GILEAD SCIENCES, INC | Common Stocks | 375558103 | 19,112 | 277,549 | SH | SOLE | 0 | 277,549 | 0 | 0 | |
| GAMING AND LEISURE PROPERTIES INC. | Common Stocks | 36467J108 | 1,056 | 22,794 | SH | SOLE | 0 | 22,794 | 0 | 0 | |
| ALPHABET INC CL C (GOOGLE C) | Common Stocks | 02079K107 | 63,751 | 25,436 | SH | SOLE | 0 | 25,436 | 0 | 0 | |
| ALPHABET INC CL A (GOOGLE A) | Common Stocks | 02079K305 | 33,030 | 13,527 | SH | SOLE | 0 | 13,527 | 0 | 0 | |
| HONEYWELL INTL INC | Common Stocks | 438516106 | 2,487 | 11,340 | SH | SOLE | 0 | 11,340 | 0 | 0 | |
| INDEPENDENT BANK GROUP, INC | Common Stocks | 45384B106 | 207 | 2,800 | SH | SOLE | 0 | 2,800 | 0 | 0 | |
| INOVALON HOLDINGS INC. (Class A) | Common Stocks | 45781D101 | 15,319 | 449,489 | SH | SOLE | 0 | 449,489 | 0 | 0 | |
| JP MORGAN CHASE & CO | Common Stocks | 46625H100 | 235 | 1,509 | SH | SOLE | 0 | 1,509 | 0 | 0 | |
| KINDER MORGAN, INC. | Common Stocks | 49456B101 | 25,271 | 1,386,215 | SH | SOLE | 0 | 1,386,215 | 0 | 0 | |
| LIBERTY MEDIA - SIRIUSXM CL C | Common Stocks | 531229607 | 14,899 | 321,177 | SH | SOLE | 0 | 321,177 | 0 | 0 | |
| LAS VEGAS SANDS | Common Stocks | 517834107 | 11,671 | 221,507 | SH | SOLE | 0 | 221,507 | 0 | 0 | |
| MICROSOFT CORPORATION | Common Stocks | 594918104 | 523 | 1,932 | SH | SOLE | 0 | 1,932 | 0 | 0 | |
| MATADOR RESOURCES CO. | Common Stocks | 576485205 | 1,620 | 45,000 | SH | SOLE | 0 | 45,000 | 0 | 0 | |
| NIELSEN HOLDINGS PLC | Common Stocks | G6518L108 | 18,712 | 758,476 | SH | SOLE | 0 | 758,476 | 0 | 0 | |
| NVIDIA CORP | Common Stocks | 67066G104 | 374 | 467 | SH | SOLE | 0 | 467 | 0 | 0 | |
| NXP SEMICONDUCT | Common Stocks | N6596X109 | 2,139 | 10,400 | SH | SOLE | 0 | 10,400 | 0 | 0 | |
| OWENS & MINOR, INC. | Common Stocks | 690732102 | 275 | 6,500 | SH | SOLE | 0 | 6,500 | 0 | 0 | |
| PAYCHEX INC. | Common Stocks | 704326107 | 631 | 5,881 | SH | SOLE | 0 | 5,881 | 0 | 0 | |
| HEALTHPEAK PROPERTIES, INC. | Common Stocks | 42250P103 | 1,798 | 53,998 | SH | SOLE | 0 | 53,998 | 0 | 0 | |
| PEPSICO INC | Common Stocks | 713448108 | 288 | 1,944 | SH | SOLE | 0 | 1,944 | 0 | 0 | |
| PROCTER & GAMBLE | Common Stocks | 742718109 | 491 | 3,639 | SH | SOLE | 0 | 3,639 | 0 | 0 | |
| QUALCOMM INC | Common Stocks | 747525103 | 36,575 | 255,892 | SH | SOLE | 0 | 255,892 | 0 | 0 | |
| ROYAL DUTCH SHELL PLC ADR CL B | Common Stocks | 780259107 | 22,082 | 568,692 | SH | SOLE | 0 | 568,692 | 0 | 0 | |
| REATA PHARMACEUTICALS INC. | Common Stocks | 75615P103 | 363 | 2,565 | SH | SOLE | 0 | 2,565 | 0 | 0 | |
| RAYTHEON TECHNOLOGIES CORP. | Common Stocks | 75513E101 | 16,667 | 195,364 | SH | SOLE | 0 | 195,364 | 0 | 0 | |
| SPROUTS FARMERS MARKET INC | Common Stocks | 85208M102 | 15,796 | 635,664 | SH | SOLE | 0 | 635,664 | 0 | 0 | |
| SPIRIT AEROSYSTEMS | Common Stocks | 848574109 | 23,885 | 506,142 | SH | SOLE | 0 | 506,142 | 0 | 0 | |
| TESLA MOTORS INC. | Common Stocks | 88160R101 | 231 | 340 | SH | SOLE | 0 | 340 | 0 | 0 | |
| TAIWAN SEMICONDUCTOR MFG CO ADR | Common Stocks | 874039100 | 216 | 1,800 | SH | SOLE | 0 | 1,800 | 0 | 0 | |
| UNITEDHEALTH GROUP INC. | Common Stocks | 91324P102 | 23,002 | 57,442 | SH | SOLE | 0 | 57,442 | 0 | 0 | |
| VISA, INC. | Common Stocks | 92826C839 | 812 | 3,474 | SH | SOLE | 0 | 3,474 | 0 | 0 | |
| XYLEM INC. | Common Stocks | 98419M100 | 17,021 | 141,893 | SH | SOLE | 0 | 141,893 | 0 | 0 | |