Jay Em Ess Stable
$461,202
2025 earnings
27%
2025 wins
$36,204,145
lifetime earnings
racing Record
2025 Stats
Career Stats
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7
Firsts
637
6
Seconds
597
4
Thirds
572
9
Unplaced
2,065
26
Starts
3,871
$461,202
Earnings
$36,204,145
$17,739
Earnings / Start
$9,353
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Bio
Principal: Samantha Siegel
Birthdate: May 10, 1965.
Birthplace: New York City, N.Y.
Residence: Beverly Hills, Calif.
Family: single
Jay Em Ess Stable is named for the first initials of Samantha Siegel and her late parents, Jan and Mace. Jan died on April 4, 2002, and Mace passed away on October 26, 2011.
Samantha, a pedigree and conformation expert who is active at many sales throughout the nation, is continuing the family stable with the blue and lime green silks and cleverly-named horses.
Principal: Samantha Siegel
Birthdate: May 10, 1965.
Birthplace: New York City, N.Y.
Residence: Beverly Hills, Calif.
Family: single
Jay Em Ess Stable is named for the first initials of Samantha Siegel and her late parents, Jan and Mace. Jan died on April 4, 2002, and Mace passed away on October 26, 2011.
Samantha, a pedigree and conformation expert who is active at many sales throughout the nation, is continuing the family stable with the blue and lime green silks and cleverly-named horses.
Mace and Jan met on a blind date at Aqueduct in 1962 and bought their first horse in 1964. Samantha was named for the song, “I Love You, Samantha,” a favorite of Jan’s, a former big band singer. Mace was the founder and owner of Macerich Co. of Santa Monica, which develops, owns and manages regional shopping malls. A powerful and respected owner-breeder in California racing, he co-founded Thoroughbred Owners of California.
Include Me Out became a Grade 1 winner in the 2012 Santa Margarita Stakes and added a second Grade 1 win later that year in the Clement L. Hirsch Stakes. Jay Em Ess earned an Eclipse Award with unbeaten champion 2-year-old male Declan’s Moon in 2004 and won the 2009 Hollywood Gold Cup with Rail Trip.
In recent years, Jay Em Ess Stable raced Grade 1 winner Masochistic and multiple Grade 1 winner By the Moon. Jay Em Ess co-owned Masochistic with Los Pollos Hermanos Racing.
