Md. Code, Insurance § 5–606

(a) (1) Except as otherwise specifically provided in this subtitle, an insurer may not have more than 10% of its total admitted assets invested in or lent on the securities of one person.

(2) Paragraph (1) of this subsection does not apply to:

(i) the classes of governmental obligations eligible for minimum capital investments of the insurer, including those obligations eligible under § 5-608(l) of this subtitle; or

(ii) investments in stock of other insurers.

(b) An insurer may not acquire the kind of real property specified in § 5-608(n)(1)(i) and (ii) of this subtitle if the value of the real property, plus the value of all of the real property then held by the insurer, exceeds 10% of the insurer’s total admitted assets.