opinion: Chief Justice Burger
  delivered the opinion of the Court.
  We granted certiorari in this case to decide whether a pledge of stock to a bank as collateral for a loan is an “offer or sale” of a security under § 17 (a) of the Securities Act of 1933, 15 U. S. C. § 77q (a).
  I
  Late in 1972, petitioner became vice president of Tri-State Energy, Inc., a corporation holding itself out as involved in energy exploration and production. At the time, Tri-State was experiencing serious financial problems. Petitioner approached Bankers Trust Co., a bank with which he had frequently dealt while he had been affiliated with an accounting firm. Bankers Trust initially refused a $5 million loan to Tri-State for operating a mine. Nevertheless, it lent TriState $50,000 on October 20, 1972, for 30 days with the understanding that if Tri-State could produce adequate financial information and sufficient collateral, additional financing might be available.
  Petitioner assisted other officers of Tri-State in preparing a financial statement for submission to the bank. The balance sheet, which listed a net worth of $7.1 million, was false and misleading in several respects. Tri-State also submitted inflated projections of future earnings based in large measure on sham contracts and forged documentation. Subsequently, petitioner personally paid the loan officer $4,000 and another official $1,000 as inducements for further loans. Tri-State borrowed an additional $425,000 over a brief period. Ultimately, the loans were consolidated into a single demand note for $475,000, dated February 26, 1973.
  Bankers Trust required collateral for each new loan; between October 20, 1972, and January 19, 1973, Tri-State pledged stock in six companies. The stocks were represented as being good, marketable, and unrestricted and valued at a total of approximately $1.7 million; in fact, they were practically worthless. Many shares were issued by “shell” companies. Most were simply “rented” — i. e., borrowed from the owner for a fee — to show to the bank or were otherwise restricted. In one instance, petitioner arranged for fictitious quotations to appear in a service reporting over-the-counter transactions and used by the bank in evaluating pledged securities; in another, Tri-State planted, through others, a fictitious advertisement in an overseas newspaper and showed it to the bank, representing it to be a quotation. Trading of one issue was suspended shortly after the pledge when the issuing company could not account for 900,000 shares of its stock; Tri-State replaced this collateral before Bankers Trust learned of the difficulty. Petitioner acted as Tri-State’s agent for most of these transactions.
  A Justice Department request for information about TriState received February 28, two days after the consolidated note was signed, prompted Bankers Trust on March 5 to demand payment in full within three days. No payment of this demand was made, and in May another officer of TriState met with bank officials and tried to forestall foreclosure. After rejecting Tri-State’s request for a further loan, the bank sued on the note.
  Bankers Trust also proceeded against petitioner personally as a guarantor of the loans. Petitioner signed a confession of judgment against himself in the amount of the unpaid loans, plus accrued interest, but thereafter filed a petition for bankruptcy. The bank recovered only about $2,500, plus interest and expenses, on its $475,000 loan.
  Petitioner was indicted on three counts of violating and conspiring to violate various federal antifraud statutes, including § 17 (a) of the Securities Act of 1933, 15 U. S. C. § 77q (a). Following a jury trial in the United States District Court for the Southern District of New York, petitioner was convicted on the conspiracy count. On appeal to the Court of Appeals for the Second Circuit, petitioner raised several grounds, including whether a pledge of stock as collateral for a bank loan is an “offer or sale” under § 17 (a). The Court of Appeals affirmed. 609 F. 2d 51 (1979). We granted certiorari limited to the question whether such a pledge is an “offer or sale.” 445 U. S. 960 (1980).
  II
  Section 17 (a) of the Securities Act of 1933 provides:
  “It shall be unlawful for any person in the offer or sale of any securities by the use of any means or instruments of transportation or communication in interstate commerce or by the use of the mails, directly or indirectly—
  “(1) to employ any device, scheme, or artifice to defraud, or
  “(2) to obtain money or property by means of any untrue statement of a material fact or any omission to state a material fact necessary in order to make the statements made, in the light of the circumstances under which they were made, not misleading, or
  “(3) to engage in any transaction, practice, or course of business which operates or would operate as a fraud or deceit upon the purchaser.” 48 Stat. 84, as amended, 15 U. S. C. § 77q (a) (emphasis added).
  Petitioner does not deny that he engaged in a conspiracy to commit fraud through false representations to Bankers Trust concerning the stocks pledged; he does not deny that the shares were “securities” under the Act. Rather, he contends narrowly that these pledges did not constitute “offers” or “sales” under § 17 (a) of the Act. Tr. of Oral Arg. 6. To sustain this contention, petitioner argues that Tri-State deposited the stocks with the bank only as collateral security for a loan, not as a transfer or sale. From this he argues that the implied, power to dispose of the stocks could ripen into title and thereby constitute a “sale” only by effecting foreclosure of the various pledges, an event that could not occur without a default on the loans.
  We begin by looking to the language of the Act. E. g., Ernst & Ernst v. Hochfelder, 425 U. S. 185, 197 (1976). The terms “offer” and “sale” in § 17 (a) are defined in § 2 (3) of the Act:
  “The term ‘sale’ or ‘sell’ shall include every contract of sale or disposition of a security or interest in a security, for value. The term . . . 'offer’ shall include every attempt or offer to dispose of, or solicitation of an offer to buy, a security or interest in a security, for value.” 48 Stat. 74, as amended, 15 U. S. C. § 77b (3) (emphasis added).
  Obtaining a loan secured by a pledge of shares of stock unmistakably involves a “disposition of [an] interest in a security, for value.” Although pledges transfer less than absolute title, the interest thus transferred nonetheless is an “interest in a security.” The pledges contemplated a self-executing procedure under a power that could, at the option of the pledgee (the bank) in the event of a default, vest absolute title and ownership. Bankers Trust parted with substantial consideration — specifically, a total of $475,000— and obtained the inchoate but valuable interest under the pledges and concomitant powers. It is not essential under the terms of the Act that full title pass to a transferee for the transaction to be an “offer” or a “sale.” See, e. g., United States v. Gentile, 530 F. 2d 461, 466 (CA2), cert. denied, 426 U. S. 936 (1976).
  Ill
  When we find the terms of a statute unambiguous, judicial inquiry is complete, except “in ‘rare and exceptional circumstances.' ” TV A v. Hill, 437 U. S. 153, 187, n. 33 (1978) (quoting Crooks v. Harrelson, 282 U. S. 55, 60 (1930)). Accord, Aaron v. SEC, 446 U. S. 680, 695 (1980); Ernst & Ernst v. Hochfelder, supra, at 214, n. 33. No such circumstances are present here, for our reading of the statute is wholly consistent with the history and the purposes of the Securities Act of 1933. The Uniform Sale of Securities Act, a model “blue sky” statute adopted in many states, defined “sale” in language almost identical to that now appearing in § 2 (3). In Cecil B. De Mille Productions, Inc. v. Woolery, 61 F. 2d 45 (1932), the Court of Appeals for the Ninth Circuit construed this provision of the model statute as adopted by California and held that the definition of “sale” embraced a pledge. Congress subsequently enacted the definition from the Uniform Act almost verbatim. See Federal Securities Act: Hearings on H. R. 4314 before the House Committee on Interstate and Foreign Commerce, 73d Cong., 1st Sess., 11 (1933). See generally id., at 13; Securities Act: Hearings on S. 875 before the Senate Committee on Banking and Currency, 73d Cong., 1st Sess., 71 (1933). Petitioner has cited nothing to suggest that Congress did not intend the broad scope that cases arising under the Uniform Act, such as Woolery, supra, had given the definition of “sale.” See Lorillard v. Pons, 434 U. S. 575, 581 (1978).
  Treating pledges as included among “offers” and “sales” comports with the purpose of the Act and, specifically, with that of § 17 (a). We frequently have observed that these provisions were enacted to protect against fraud and promote the free flow of information in the public dissemination of securities. E. g., United States v. Naftalin, 441 U. S. 768, 774 (1979); Ernst & Ernst v. Hochfelder, supra, at 195. The economic considerations and realities present when a lender parts with value and accepts securities as collateral security for a loan are similar in important respect to the risk an investor undertakes when purchasing shares. Both are relying on the value of the securities themselves, and both must be able to depend on the representations made by the trans-feror of the securities, regardless of whether the transferor passes full title or only a conditional and defeasible interest to secure repayment of a loan.
  Petitioner would have us interpret “offer” and “sale” in a way that not only is cramped but conflicts with the plain meaning of the statute and its purpose as well. We therefore hold that the pledges here were “offers” or “sales” under § 17 (a); accordingly, the judgment of the Court of Appeals is
  Affirmed.
  The balance sheet listed an account receivable of $7.5 million and included a copy of a contract that purportedly formed the basis of this account. No such item existed, and the signature on the contract had been forged. Evidence also indicated that Tri-State had listed a fictitious tax liability to offset the fictitious asset. The statement also referred to over $264,000 cash on hand and coal worth $180,000. Both figures were exaggerated.
  Subsequent loans were made on November 22 ($50,000), November 30 ($100,000), and December 6 ($275,000).
  The pledges were 400,000 shares of American Leisure Corp. (October 20 — shell company; shares restricted); 2,000 shares of All States Life Insurance Co. (November 10 — nonmarketable; “rented” to show the bank but not owned by Tri-State); 20,000 shares of Marlin Investment Co. (November 22 — “rented” from a person who was told they would not be used as collateral); 100,000 shares of Management Dynamics, Inc. (December 6 — trading suspended; withdrawn as collateral); 175,000 shares of General Investment Corp. (December 19 — restricted); 50,000 shares of Satellite Systems Corp. (January 19 — restricted and “rented”; fictitious overseas advertisement planted).
  Count 1 of the indictment charged petitioner and his codefendants with conspiring to violate 18 U. S. C. § 1014 (fraud in a bank loan application), 18 U. S. C. §1341 (mail fraud), and 18 U. S. C. § 1343 (wire fraud), as well as § 17 (a) (securities fraud). Counts 2 and 3 alleged substantive violations of § 17 (a) and 18 U. S. C. § 1014, respectively, against petitioner and some of the codefendants listed in the conspiracy count. Proceedings against petitioner were severed before trial. The Government agreed to dismiss the substantive charge of fraud in a bank loan application before the jury reached a verdict, and the jury acquitted petitioner of the substantive count of securities fraud.
  The Court of Appeals divided over an evidentiary issue. It rejected petitioner’s argument regarding the scope of § 17 (a) without comment. See 609 F. 2d, at 66.
  The misrepresentations at issue in this case related to the stocks themselves; petitioner does not allege that his conviction, insofar as it involved securities fraud under § 17 (a), was based on misrepresentations made about the financial condition of Tri-State itself. Thus, we need not decide whether misrepresentations or omissions involved in a securities transaction but not pertaining to thé securities themselves can form the basis of a violation of § 17 (a).
  National Conference of Commissioners on Uniform State Laws, Handbook and Proceedings 174 (1929) (Fourth and Final Draft) ("sale” defined to “include every disposition, or attempt to dispose of a security or interest in a security for value”).
  To the extent that petitioner argues there was no need to protect pledgees, the very fact that Congress saw fit to afford such protection under the Commerce Clause, U. S. Const., Art. I, §8, cl. 3, ends our inquiry, absent a contention, not present here, that the Constitution otherwise prohibits the means selected. “Our individual appraisal of the wisdom or unwisdom of a particular course consciously selected by the Congress is to be put aside in the process of interpreting a statute. Once the meaning of an enactment is discerned and its constitutionality determined, the judicial process comes to an end.” TV A v. Hill, 437 U. S. 153, 194 (1978).
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