Portfolio Building Block Integrated Oil and Gas and Exploration and Production Index ETF
Schedule of Investments
July 31, 2026 (Unaudited)
| COMMON STOCKS - 99.7% | Shares | Value | ||
| Oil & Gas - 99.7%(a) | ||||
| Aker BP ASA | 74,563 | $ | 2,629,776 | |
| Antero Resources Corp.(b) | 69,724 | 2,519,825 | ||
| APA Corp. | 86,048 | 3,211,311 | ||
| ARC Resources Ltd. | 138,257 | 3,304,528 | ||
| BP PLC | 2,610,823 | 19,412,173 | ||
| Canadian Natural Resources Ltd. | 423,646 | 20,166,860 | ||
| Cenovus Energy, Inc. | 321,915 | 9,699,788 | ||
| Chevron Corp. | 266,162 | 52,388,667 | ||
| ConocoPhillips | 162,724 | 19,604,988 | ||
| Devon Energy Corp. | 281,433 | 12,701,071 | ||
| Diamondback Energy, Inc. | 68,806 | 13,964,178 | ||
| Eni SpA | 495,914 | 13,682,354 | ||
| EOG Resources, Inc. | 130,615 | 19,421,144 | ||
| EQT Corp. | 143,507 | 7,647,488 | ||
| Equinor ASA | 187,837 | 7,652,751 | ||
| Expand Energy Corp. | 48,618 | 4,571,551 | ||
| ExxonMobil Holdings Corp. | 553,316 | 86,007,439 | ||
| Galp Energia SGPS SA | 100,933 | 2,286,568 | ||
| Imperial Oil Ltd. | 36,007 | 4,664,984 | ||
| Inpex Corp. | 218,105 | 4,968,233 | ||
| Occidental Petroleum Corp. | 243,805 | 13,913,951 | ||
| OMV AG | 35,065 | 2,547,725 | ||
| Ovintiv, Inc. | 68,389 | 4,265,141 | ||
| Permian Resources Corp. - Class A | 154,554 | 3,293,546 | ||
| Repsol SA(b) | 262,287 | 7,960,802 | ||
| Santos Ltd. | 791,513 | 4,358,411 | ||
| Shell PLC | 725,724 | 33,044,721 | ||
| Suncor Energy, Inc. | 291,665 | 19,572,544 | ||
| Texas Pacific Land Corp. | 16,930 | 6,815,679 | ||
| TotalEnergies SE | 271,778 | 23,896,076 | ||
| Tourmaline Oil Corp. | 89,653 | 3,956,529 | ||
| Var Energi ASA | 218,646 | 1,088,135 | ||
| Whitecap Resources, Inc. | 293,397 | 3,459,234 | ||
| Woodside Energy Group Ltd. | 457,209 | 10,580,940 | ||
| 449,259,111 | ||||
| TOTAL COMMON STOCKS (Cost 416,654,718) | 449,259,111 | |||
| SHORT-TERM INVESTMENTS - 0.2% | ||||
| Money Market Funds - 0.2% | Shares | Value | ||
| Dreyfus Treasury Securities Cash Management, 3.56%(c) | 777,960 | $ | 777,960 | |
| TOTAL SHORT-TERM INVESTMENTS (Cost 777,960) | 777,960 | |||
| TOTAL INVESTMENTS - 99.9% (Cost 417,432,678) | $ | 450,037,071 | ||
| Other Assets in Excess of Liabilities - 0.1% | 296,892 | |||
| TOTAL NET ASSETS - 100.0% | $ | 450,333,963 |
Percentages are stated as a percent of net assets.
| (a) | To the extent that the Fund invests more heavily in a particular industry or sector of the economy, its performance will be especially sensitive to developments that significantly affect those industries or sectors. |
| (b) | Non-income producing security. |
| (c) | The rate shown represents the 7-day annualized effective yield as of July 31, 2026. |