Jack In The Box JACK Institutional Ownership

Updated Oct 11, 2026

Jack in the Box Inc (NASDAQ:JACK) counted 134 institutional investors among its 13F-reported shareholders for the quarter ended June 30, 2026.

• Together they owned 22.16% of the outstanding stock in Q2 2026, up from 20.49% a quarter earlier.
• Total shares held in Jack in the Box rose 8.17% from Q1 2026, while the number of holders fell 25.14% from Q2 2025.
• Among the 134 holders of Jack in the Box, 80 added to their positions, 34 reduced their stakes and 20 left their positions unchanged.
• Altogether, institutional holders owned 18.43Mn JACK shares at the end of Q2 2026, up 1.39Mn from the prior quarter and down 3.93Mn from a year earlier.
• As of June 30, 2026, the biggest holder of Jack in the Box was Nantahala Capital Management, LLC with 1.73Mn shares, or 2.08% of shares outstanding.
• Among holders that already owned Jack in the Box, the biggest buyers in Q2 2026 were Bank of America Corp (+541.64K shares), Goldman Sachs Group Inc (+373.52K shares), UBS Group AG (+365.16K shares), Two Sigma Investments, LP (+353.19K shares) and Earnest Partners LLC (+238.48K shares).
• The biggest cuts to JACK positions during Q2 2026 came from Marshall Wace, LLP (-510.1K shares), Millennium Management LLC (-258.85K shares), Morgan Stanley (-120.43K shares), Engineers Gate Manager LP (-111.4K shares) and Susquehanna International Group, LLP (-85.19K shares).
• Business Quant data shows the 10 biggest positions in Jack in the Box as of Q2 2026 were held by Nantahala Capital Management, LLC (1.73Mn shares), Callodine Capital Management, LP (1.72Mn shares), Biglari Capital Corp. (1.68Mn shares), BlackRock, Inc. (1.34Mn shares), Bank of America Corp (1.16Mn shares), Vanguard Capital Management LLC (826.46K shares), Allianz Asset Management GmbH (708K shares), Charles Schwab Investment Management Inc (632.37K shares), Earnest Partners LLC (552.37K shares) and LSV Asset Management (515.38K shares).