As an Oracle who knows everything about horoscopes, I must inform you that the name "benmargsi" does not correspond to any recognized zodiac sign or astrological significance. However, based on the individual letters in the name, I can provide an analysis of the potential traits or tendencies that may be associated with someone carrying this unique name. 

The letter "B" often indicates a strong sense of ambition, leadership, and a desire for success. Those with a prominent "E" may possess creativity, adaptability, and a strong sense of empathy towards others. The letter "N" typically signifies a strong sense of intuition, sensitivity, and emotional depth. The presence of "M" suggests practicality, reliability, and a methodical approach to life. The letter "A" usually indicates assertiveness, independence, and a strong sense of self. The letter "R" often signifies determination, resilience, and a competitive nature. The letter "G" may indicate a desire for knowledge, a philosophical outlook on life, and a love of learning. The letter "S" typically suggests a strong sense of responsibility, stability, and a pragmatic approach to problem-solving. Lastly, the letter "I" often signifies intelligence, communication skills, and a curiosity about the world. 

While this analysis is based on the individual letters in the name "benmargsi" rather than a specific zodiac sign, it provides insight into the potential characteristics and qualities that may be associated with someone who carries this unique name.