delivered the opinion of the Court.
*536
Sarah A. Sparkman died intestate in 1972. An heir, Charles Spark-man, commenced an action to have an inter vivos or revocable living trust declared invalid. The validity of the trust was upheld in the trial court. In a series of modified opinions, the court of appeals ultimately held that the trust was invalid because the transfer of certain securities did not comply with the Uniform Stock Transfer Act, C.R.S. 1963, 31-1 l-l,
1
and because of lack of proof of the proper transfer of certain bonds. It further held that these findings deprived the trust of a corpus and, therefore, invalidated the trust.
Sparkman
v.
Exchange National
Bank,
On January 7, 1955, Sarah A. Sparkman (hereinafter the settlor) and the Exchange National Bank (hereinafter the bank) executed a document entitled “Trust Agreement.” Pursuant to the terms of the document, the settlor delivered several unendorsed stocks and bonds to the bank. The settlor also signed and submitted separate stock assignment forms in which the spaces for the names of the transferor and transferee, the number of shares, the names of the issuing corporation, and the stock certificate numbers were left blank.
The agreement recited that “the Settlor has assigned, transferred and/or delivered to the Trustee the property described in Schedule A.” Schedule A listed the stocks and bonds in question. Sarah Sparkman, the settlor, was to be the sole beneficiary of the trust during her lifetime. The agreement further provided that the “Trustee shall keep securities and property registered in the name of the Settlor.” The trustee was given the power to manage and reinvest the proceeds from the property, subject to the approval of the settlor, the power to collect dividends and deposit them to the settlor’s account in the bank, and the power to pay principal to the settlor when the settlor deemed it necessary. The settlor reserved the right to modify or revoke the agreement. Upon the death of the settlor, the trust was to terminate, and the trustee was to distribute the remaining assets of the trust to certain named parties.
In 1964, the bank re-registered the securities in its own name as trustee for Sarah Sparkman. It accomplished this by forwarding the securities, along with the stock assignment forms which it filled in, to various transfer agents.
Validity of the Trust Agreement
The principal issue at trial was whether the “trust” agreement was illusory and invalid as an attempted testamentary disposition. It is well established that the settlor may reserve extensive powers of control
*537
over the administration of the trust corpus.
See Denver National Bank
v.
Von Brecht,
A
more
delicate question is presented by the trust provision that the trustee shall keep securities and property “registered” in the settlor’s name. A basic axiom of trust law is that “[i]n order to create a trust of any description, the [settlor] must indicate with reasonable definiteness an intention to sever the legal from the equitable estate.”
Walton
v.
Wormington,
Burden of Proof
The court of appeals held that the “record does not support the trial court’s finding that the legal title of the bonds was transferred.”
Sparkman
v.
Exchange National Bank,
The burden of proof rested upon the plaintiff to prove the elements of his case, as determined by the pleadings, by a preponderance of the evidence.
See Judkins
v.
Carpenter,
Compliance With the Uniform Stock Transfer Act
The court of appeals correctly concluded that the settlor failed to comply with the provisions of the Uniform Stock Transfer Act, C.R.S. 1963, 31-11-1, et seq. See Sparkman v. Exchange National Bank, supra. The question which we must resolve is the legal effect of the failure to comply with transfer formalities on the trust relationship.
Technical concepts of title and title transfer have not been generally used as a basis for vitiating a trust and as a means of defeating the intent of the settlor.
See, e.g., In re Estate of Brenner,
*539
The court of appeals recognized that the Uniform Stock Transfer Act provides a method whereby a person who was the intended transferee of an unendorsed stock certificate may compel specific performance of the duty to complete the endorsement.
Sparkman
v.
Exchange National Bank,
supra; C.R.S. 1963, 31-11-9. Moreover, the obligation may be enforced against the settlor’s personal representative.
See Reinhard v. Sidney B. Roby Co.,
Necessary elements for the invocation of the remedial provision of the Uniform Stock Transfer Act are the owner’s “intent to transfer such certificate or shares,” and the “absence of an agreement to the contrary.” C.R.S. 1963, 31-11-9. The evidence supported the trial court’s determination that Sarah Sparkman, the settlor, had the requisite intent, and we will not disturb that finding on appeal.
See Estate of Granberry
v.
Baker,
Respondent contends that the trust agreement provision regarding registration of the securities in the settlor’s name was “an agreement to the contrary.” We conclude that even if the registration provision would have initially barred invocation of the remedial section of the statute as an “agreement to the contrary,”- the registration provision of the trust agreement was subsequently modified. The settlor’s initial grant of the power to re-register the stocks, and her eight-year acquiescence in the use of such power by the trustee modified the registration provision of the original agreement. In 1964, the bank re-registered the stocks in its own name as trustee, using the blank assignment forms endorsed by the settlor. The parole evidence rule presents no barrier to a subsequent modification by conduct.
See Hatch
v.
Fritz,
Accordingly, we reverse the decision of the court of appeals and remand with directions to affirm the judgment of the trial court.
Notes
Formerly C.R.S. 1953, 31-9-1, repealed, Colo. Sess. Laws 1965, ch. 330, § 155-10-102 at 1477 (effective July 1, 1966).
In Thomas, supra, the court noted;
“By weight of authority, a trust otherwise effective, is not rendered nugatory because the settlor reserves to himself the following rghts and powers: (1) the use of the property and income therefrom for life; (2) the supervision and direction of investments and reinvestments: (3) the amendment or modification of the trust agreement; (4) the revocation of the trust in whole or part; (5) the consumption of principal.”
