| Item 1. | |
| (a) | Name of issuer:
Delek US Holdings, Inc |
| (b) | Address of issuer's principal executive offices:
310 SEVEN SPRINGS WAY, BRENTWOOD, Tennessee, 37027 |
| Item 2. | |
| (a) | Name of person filing:
ION Asset Management Ltd.
ION Asset Management Ltd. ("ION") possesses beneficial ownership over shares of common stock of the Issuer that are reported in this Schedule 13G/A and that are held in two ways (i) 1,941,503 shares are held by ION Long/Short Fund LP, as to which ION possesses sole voting power and sole dispositive power, and (ii) 1,802,387 shares held in a managed account, as to which ION lacks voting power and shares dispositive power with the managers of the managed account (who could require that ION dispose of the shares under certain circumstances). |
| (b) | Address or principal business office or, if none, residence:
13th Floor, Building E, 89 Medinat Hayehudim Street, Herzliyah, Israel. |
| (c) | Citizenship:
Cayman Islands |
| (d) | Title of class of securities:
ION Asset Management Ltd. |
| (e) | CUSIP No.:
24665A103 |
| Item 3. | If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a: |
| (a) |  Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
|
| (b) | Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
|
| (c) | Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
|
| (d) | Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
|
| (e) | An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
|
| (f) | An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
|
| (g) | A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
|
| (h) | A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
|
| (i) | A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
|
| (j) | A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J),
please specify the type of institution:
|
| (k) | Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
|
| | |
| Item 4. | Ownership |
| (a) | Amount beneficially owned:
3,743,890 |
| (b) | Percent of class:
6.17% |
| (c) | Number of shares as to which the person has:
|
| | (i) Sole power to vote or to direct the vote:
1,941,503
|
| | (ii) Shared power to vote or to direct the vote:
0
|
| | (iii) Sole power to dispose or to direct the disposition of:
1,941,503
|
| | (iv) Shared power to dispose or to direct the disposition of:
1,802,387
|
| Item 5. | Ownership of 5 Percent or Less of a Class. |
| | |
| Item 6. | Ownership of more than 5 Percent on Behalf of Another Person. |
| |
Not Applicable
|
| Item 7. | Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person. |
| |
Not Applicable
|
| Item 8. | Identification and Classification of Members of the Group. |
| |
Not Applicable
|
| Item 9. | Notice of Dissolution of Group. |
| |
Not Applicable
|
Rule 13d-1(c)