Maryland Insurance Section 5-606
§ 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.