Title
Makati Stock Exchange, Inc. vs. Securities and Exchange Commission
Case
G.R. No. L-23004
Decision Date
Jun 30, 1965
Makati Stock Exchange challenged SEC's rule prohibiting double listing, arguing it created a monopoly for Manila Stock Exchange. Supreme Court ruled SEC lacked authority, deeming the rule discriminatory and unnecessary for public interest, approving Makati's operation without the condition.

Case Summary (G.R. No. L-23004)

SEC’s Double‐Listing Rule and Statutory Framework

SEC Rule (Sec. 28b-13) states that securities listed on one exchange “shall not” be listed anew on another. Under Sec. 17(a) and (d), failure to abide by SEC rules may justify denial of registration. MakSE complied with all statutory prerequisites except it refused to accept the non‐listing requirement. The SEC invoked its general regulatory powers, asserting the rule was “necessary for the execution of its functions.”

Monopolistic Implications and Legislative Intent

All major securities were already listed on MSE, so SEC’s condition effectively barred MakSE from meaningful operation. The rule would perpetuate MSE’s de facto monopoly, contradicting market competition and Congress’s recognition of multiple exchanges (Sec. 28b-13). Historically, five exchanges operated prewar, and dual listing was commonplace under earlier amendments. No amendment subsequently prohibited multiple exchanges.

Absence of Statutory Authority for Prohibition

Administrative power must be expressly or impliedly granted by statute. Sec. 28 authorizes ten‐day suspension of trading “if the public interest so requires,” not indefinite prohibition. Sec. 33’s general “regulate” clause does not imply a power to bar new exchanges or double listing. The SEC cited no explicit enabling provision for its non‐listing rule. Prior departmental approval before World War II adds no judicial weight absent statutory backing.

Public Interest and Investor Protection Rationales

The SEC argued that dual trading fragments the market, undermines auction pricing, and potentially confuses investors. The Court held those premises inconclusive. Price variance across exchanges can benefit buyers and sellers by fostering competitive rates and brokerage fees. Concentration on a single market is neither necessary nor shown to prevent fraud or deceptive practices as envisioned by the Securities Act.

Constitutional and Libertarian Objections

By restricting MakSE’s right to operate, the SEC violated:
• Equality before the law (Art. III, sec. 1, 1935 Constitution) by discriminatorily favoring MSE
• Liberty to pursue lawful trade or occupation (Art. III, sec. 2)
• Investors’ freedom to choose brokers and trading venues
Moreover, the SEC’s indefinite prohibition amounted to legislative rule‐making, an undelegated power, rather than proper exercise of administrative authority.

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