| Nokia(NOK) | COM | 654902204 | $51 | 13,000 | 0.0% |
| Telefonica de Espana(TELFY) | COM | 879382208 | $56 | 12,366 | 0.0% |
| Applied Materials Inc(AMAT) | COM | 038222105 | $214 | 1,600 | 0.0% |
| Workday Inc Cl A(WDAY) | COM | 98138H101 | $226 | 911 | 0.0% |
| Vanguard World Fds Inf Tech ET(VGT) | COM | 92204A702 | $227 | 634 | 0.0% |
| Vanguard Intl Eqty Idx Emr Mkt(VWO) | COM | 922042858 | $229 | 4,409 | 0.0% |
| Shopify Inc Cl A(SHOP) | COM | 82509L107 | $243 | 220 | 0.0% |
| Alphabet Inc Cap Sk Cl C(GOOG) | COM | 02079K107 | $246 | 119 | 0.0% |
| McDonald's Corp.(MCD) | COM | 580135101 | $256 | 1,142 | 0.0% |
| CVS Health(CVS) | COM | 126650100 | $268 | 3,562 | 0.0% |
| Lockheed Martin Corp(LMT) | COM | 539830109 | $274 | 742 | 0.0% |
| Nvidia(NVDA) | COM | 67066G104 | $276 | 516 | 0.0% |
| Chipotle Mexican Grill Com(CMG) | COM | 169656105 | $284 | 200 | 0.0% |
| ServiceNow Inc Com(NOW) | COM | 81762P102 | $286 | 572 | 0.0% |
| Vanguard Ftse Developed Market(VEA) | COM | 921943858 | $292 | 5,941 | 0.0% |
| IShares Tr Trans Avg ETF(IYT) | COM | 464287192 | $294 | 1,140 | 0.0% |
| Phillips 66 COM(PSX) | COM | 718546104 | $301 | 3,688 | 0.0% |
| Blackstone Group Inc.(BXUSD) | COM | 09253U108 | $341 | 4,575 | 0.0% |
| First Financial Bankshares(FFIN) | COM | 32020R109 | $343 | 7,336 | 0.0% |
| Ishares Tr S&P Midcap 400(IJH) | COM | 464287507 | $345 | 1,326 | 0.0% |
| Merck & Co Inc New(MRK) | COM | 58933Y105 | $363 | 4,710 | 0.0% |
| Mondelez Intl Inc Cl A(MDLZ) | COM | 609207105 | $387 | 6,610 | 0.0% |
| Sysco Corp(SYY) | COM | 871829107 | $399 | 5,070 | 0.0% |
| Sabine Royalty Trust UBI(SBR) | COM | 785688102 | $425 | 14,000 | 0.0% |
| Nike Inc CL B(NKE) | COM | 654106103 | $434 | 3,265 | 0.0% |
| Blackrock Inc(BLKCHF) | COM | 09247X101 | $445 | 590 | 0.0% |
| International Business Machine(IBM) | COM | 459200101 | $448 | 3,365 | 0.0% |
| Waste Management Inc Del(WM) | COM | 94106L109 | $452 | 3,500 | 0.0% |
| Spdr Series Trust S&P Biotech(XBI) | COM | 78464A870 | $472 | 3,482 | 0.0% |
| Berkshire Hathaway Cl B(BRK/B) | COM | 084670702 | $511 | 2,002 | 0.0% |
| Walt Disney(DIS) | COM | 254687106 | $517 | 2,802 | 0.0% |
| Salesforce Com Inc(CRM) | COM | 79466L302 | $527 | 2,489 | 0.0% |
| Home Depot Inc(HD) | COM | 437076102 | $644 | 2,110 | 0.0% |
| Facebook Inc Cl A(META) | COM | 30303M102 | $657 | 2,232 | 0.0% |
| Dorchester Minerals LP(DMLP) | COM | 25820R105 | $716 | 52,423 | 0.0% |
| J.P. Morgan Chase & Co.(JPM) | COM | 46625H100 | $734 | 4,820 | 0.0% |
| UnitedHealth Group Inc(UNH) | COM | 91324P102 | $761 | 2,045 | 0.0% |
| Lowes Cos Inc(LOW) | COM | 548661107 | $767 | 4,032 | 0.0% |
| Netflix Inc(NFLX) | COM | 64110L106 | $877 | 1,682 | 0.0% |
| Medtronic PLC(MDT) | COM | G5960L103 | $928 | 7,852 | 0.0% |
| Paypal Hldgs Inc(PYPL) | COM | 70450Y103 | $930 | 3,830 | 0.0% |
| Chevron Corp(CVX) | COM | 166764100 | $973 | 9,281 | 0.0% |
| Luminex Corp | COM | 55027E102 | $1.0K | 32,275 | 0.0% |
| Lam Research Corp.(LRCXEUR) | COM | 512807108 | $1.2K | 2,032 | 0.0% |
| Black Stone Minerals L Com Uni(BSM) | COM | 09225M101 | $1.3K | 150,357 | 0.0% |
| Alphabet Inc Cap Sk Cl A(GOOGL) | COM | 02079K305 | $1.4K | 682 | 0.0% |
| Mastercard Inc Cl A(MA) | COM | 57636Q104 | $1.5K | 4,251 | 0.0% |
| Abbott Labs(ABT) | COM | 002824100 | $1.8K | 14,675 | 0.0% |
| San Juan Basin Royalty Trust(SJT) | COM | 798241105 | $2.2K | 565,191 | 0.1% |
| Exxon Mobil Corp(XOM) | COM | 30231G102 | $2.6K | 46,731 | 0.1% |