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SB-384 • 2026

Preventing Algorithmic Price Fixing Act: prohibition on certain price-setting algorithm uses.

Preventing Algorithmic Price Fixing Act: prohibition on certain price-setting algorithm uses.

Housing Technology
Passed Legislature

This bill passed both chambers and reached final enrollment, even if later executive action is not shown here.

Sponsor
Wahab
Last action
2025-08-29
Official status
August 29 hearing: Held in committee and under submission.
Effective date
Not listed

Plain English Breakdown

The bill summary and digest do not provide specific information about the enforcement mechanisms beyond authorizing civil actions by the Attorney General and local prosecutors.

Preventing Algorithmic Price Fixing Act

This act makes it illegal for businesses to use certain algorithms to set prices or rental levels if they know these algorithms will be used by competitors and involve secret data.

What This Bill Does

  • It prohibits people from selling, licensing, providing, or using price-setting algorithms intended for two or more competing companies in the same market if the person knows or should know that the algorithm processes nonpublic data to set prices or rental levels.
  • Users of these algorithms can avoid penalties if they show they did their best to ensure the algorithm wasn't being used illegally.
  • The Attorney General and local prosecutors can sue people who break this law and get fines up to $1,000 for each violation.
  • Contracts that go against this act are not valid.

Who It Names or Affects

  • Businesses using or selling price-setting algorithms
  • Competing companies in the same market

Terms To Know

Algorithm
A set of instructions that a computer uses to solve problems or make decisions.
Nonpublic data
Information that is not available to the public and kept secret by companies.

Limits and Unknowns

  • The bill does not specify what happens if businesses accidentally use these algorithms without knowing they are illegal.
  • It's unclear how this act will be enforced in practice.

Bill History

  1. 2025-08-29 California Legislative Information

    August 29 hearing: Held in committee and under submission.

  2. 2025-08-20 California Legislative Information

    August 20 set for first hearing. Placed on APPR. suspense file.

  3. 2025-07-17 California Legislative Information

    Read second time and amended. Re-referred to Com. on APPR.

  4. 2025-07-17 California Legislative Information

    From committee: Do pass as amended and re-refer to Com. on APPR. (Ayes 9. Noes 4.) (July 16).

  5. 2025-07-17 California Legislative Information

    Assembly Rule 63 suspended. (Ayes 49. Noes 15. Page 2578.)

  6. 2025-07-02 California Legislative Information

    From committee: Do pass and re-refer to Com. on P. & C.P. (Ayes 9. Noes 2.) (July 1). Re-referred to Com. on P. & C.P.

  7. 2025-06-26 California Legislative Information

    From committee with author's amendments. Read second time and amended. Re-referred to Com. on JUD.

  8. 2025-06-09 California Legislative Information

    Referred to Coms. on JUD. and P. & C.P.

  9. 2025-06-04 California Legislative Information

    In Assembly. Read first time. Held at Desk.

  10. 2025-06-03 California Legislative Information

    Read third time. Passed. (Ayes 28. Noes 10. Page 1469.) Ordered to the Assembly.

  11. 2025-05-23 California Legislative Information

    Read second time. Ordered to third reading.

  12. 2025-05-23 California Legislative Information

    From committee: Do pass. (Ayes 5. Noes 1. Page 1198.) (May 23).

  13. 2025-05-16 California Legislative Information

    Set for hearing May 23.

  14. 2025-05-05 California Legislative Information

    May 5 hearing: Placed on APPR. suspense file.

  15. 2025-04-29 California Legislative Information

    Set for hearing May 5.

  16. 2025-04-24 California Legislative Information

    Read second time and amended. Re-referred to Com. on APPR.

  17. 2025-04-23 California Legislative Information

    From committee: Do pass as amended and re-refer to Com. on APPR. (Ayes 11. Noes 2. Page 834.) (April 22).

  18. 2025-04-08 California Legislative Information

    From committee with author's amendments. Read second time and amended. Re-referred to Com. on JUD.

  19. 2025-04-03 California Legislative Information

    Set for hearing April 22.

  20. 2025-02-26 California Legislative Information

    Referred to Com. on JUD.

  21. 2025-02-18 California Legislative Information

    From printer. May be acted upon on or after March 17.

  22. 2025-02-14 California Legislative Information

    Introduced. Read first time. To Com. on RLS. for assignment. To print.

Official Summary Text

SB 384, as amended, Wahab.
Preventing Algorithmic Price Fixing Act: prohibition on certain price-setting algorithm uses.
Existing law governs various business practices in this state, including certain laws relating to the use of technology.
Existing law, commonly known as the Cartwright Act, identifies certain acts that are unlawful restraints of trade and unlawful trusts and prescribes provisions for its enforcement through civil actions.
This bill, the Preventing Algorithmic Price Fixing Act, would prohibit a person from selling, licensing, providing, or using a price-setting algorithm, as defined, with the intent
or reasonable expectation
that it be used by 2 or more competitors, as defined, in the same market if the person knows or should know that the algorithm processes nonpublic data, as defined, to set either: (1) a price or supply level of a good or service or (2) a rent or occupancy level of rental property. The bill would provide a
person
user of a price-setting algorithm
an affirmative defense to liability if the
person
user
exercised reasonable due diligence, as specified. The bill would authorize the Attorney General or a district attorney, city attorney, or county counsel to file a civil action for violations of these provisions, as
specified, including for a civil penalty of up to $1,000 per violation, as specified.
This bill would declare that a contract that violates these provisions is to that extent void and that its provisions do not limit the applicability of antitrust laws.

Current Bill Text

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