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Polymarket Tightens Insider Trading Rules

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Polymarket Tightens Insider Trading Rules

The prediction market is updating insider trading and manipulation rules days after inking an exclusive partnership with Major League Baseball.

Polymarket on Monday announced updated market integrity rules across both its DeFi platform and its CFTC-regulated U.S. exchange, amplifying requirements governing insider trading and market manipulation. The new standards appear in the DeFi platform’s Terms of Use and the Polymarket US Rulebook.

“Markets thrive on clarity,” said Neal Kumar, Polymarket’s chief legal officer, in a release.

Prohibited Behavior

The rules spell out three categories of banned insider trading conduct. First, participants may not trade on any contract if they possess confidential information about the outcome of the underlying event, where using that information would violate a preexisting duty of trust or confidence.

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Second, participants may not trade on confidential information passed to them by someone who owed a preexisting duty of trust or confidence to someone else, if they know or have reason to know that the tipper would be prohibited from trading on it themselves.

Third, participants may not trade on any contract if they hold a position of authority or influence sufficient to affect the outcome of the underlying event.

Beyond insider trading, both platforms prohibit all types of fraud and market manipulation — including spoofing, wash trading, and fictitious transactions — as well as self-dealing, front-running, information misuse, attempted manipulation, and disruptive practices.

Enforcement

On the DeFi side, Polymarket maintains a multi-layered monitoring system and partners with surveillance and technology specialists, and all trades are executed on the Polygon blockchain, providing built-in on-chain transparency. When the platform or community flags unusual activity, Polymarket said it may ban wallet addresses or refer the matter to law enforcement.

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On Polymarket US, surveillance operates at three levels: partnerships with trade surveillance specialists, a control desk conducting real-time monitoring, and a Regulatory Services Agreement with the National Futures Association to detect rule violations and investigate offenders. Sanctions on the U.S. exchange can include suspension, termination, monetary penalties, or regulatory referrals.

The rule overhaul follows last week’s announcement that MLB named Polymarket its official and exclusive prediction market exchange. The deal centers on an integrity framework that restricts markets deemed to pose manipulation risk, including contracts on individual pitches, manager decisions, and umpire performance. MLB also signed an information-sharing agreement with the CFTC, the first such deal between the derivatives regulator and a professional sports body.

Polymarket received CFTC approval to operate in the U.S. in November 2025, following a $2 billion strategic investment from Intercontinental Exchange. The platform has since begun rolling out its U.S. app, starting with sports markets.

This article was written with the assistance of AI workflows. All our stories are curated, edited and fact-checked by a human.

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Silver Crashes 50% in 53 Days: Is Jane Street the Firm Behind the Collapse?

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Brian Armstrong's Bold Prediction: AI Agents Will Soon Dominate Global Financial

TLDR:

  • Silver dropped from $121.64 to $65 in 53 days, with 25% of the loss coming after Jane Street’s filing went public.
  • Jane Street increased its SLV holdings by 500x in Q4 2025, quietly becoming the ETF’s largest shareholder ahead of the crash.
  • SEBI fined Jane Street a record $570M for running a stock-buying scheme in India to profit from larger short options positions.
  • No US regulator has demanded Jane Street’s full derivatives exposure in silver for January 29 and 30, the crash dates.

Silver has lost nearly 50% of its value in just 53 days, dropping from an all-time high of $121.64 to around $65. The sharp decline has drawn attention to Jane Street, a high-frequency trading firm with a documented history of controversial trading practices.

Analysts and market observers are now questioning the firm’s role in the crash, given its massive, undisclosed position in the silver ETF, SLV.

Jane Street’s Hidden Stake in SLV

In Q4 2025, Jane Street quietly accumulated 20.67 million shares of SLV, the world’s most liquid silver ETF. That figure is up from just 41,100 shares the quarter before — a 500x increase.

The position, valued at approximately $1.3 billion, made Jane Street the largest SLV holder, ahead of BlackRock and Morgan Stanley.

This stake was not publicly known while silver was rallying toward its January 29 peak. On January 30, silver collapsed 30% within 30 hours.

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That was the worst precious metals crash since 1980. The CME raised margin requirements mid-crash, triggering further cascading liquidations.

The 13F filing revealing Jane Street’s position only became public on February 25. After that disclosure, silver dropped an additional 25%.

As Bull Theory posted on social media, “Silver hit ATH $121.64 on January 29, 2026. Today it sits at $65, a 46% collapse, and 25% of that drop happened AFTER February 25, 2026.”

A Pattern Documented in India and Crypto

Jane Street’s trading practices have already attracted regulatory scrutiny in two other markets. India’s SEBI issued a 105-page order against the firm, resulting in the largest fine in the regulator’s history. SEBI impounded $570 million from Jane Street after finding market manipulation across 18 expiry days.

In those sessions, Jane Street bought large amounts of index stocks in the morning to push prices higher. At the same time, it built short options positions 7.3 times larger than its stock exposure.

By afternoon, it offloaded the stocks, the index fell, and the options paid out. On one day, the firm reportedly lost $7.5 million on stocks while making $89 million on options.

In the crypto market, the bankruptcy administrator for Terraform Labs filed an 83-page federal lawsuit against Jane Street.

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The lawsuit alleged the firm used non-public information to avoid over $200 million in losses tied to the $40 billion Terra/LUNA collapse. Blockchain forensics reportedly traced key wallet activity back to Jane Street through Coinbase records.

The Question No Regulator Has Asked

A 13F filing only discloses long equity positions. It does not show short positions, options exposure, or full derivatives books. That gap means Jane Street’s net silver position on January 29 and 30 remains unknown.

The physical silver backing SLV is held by JPMorgan. In 2020, JPMorgan paid $920 million to resolve CFTC charges related to eight years of precious metals market manipulation. That remains the largest CFTC sanction on record.

No US regulator has publicly demanded a full accounting of Jane Street’s complete silver derivatives exposure around the time of the crash.

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As Bull Theory noted online, “If the India playbook was running in silver, the $1.3B ETF stake was just the cost. The options position on the other side was the profit.”

None of this has been proven in US courts, though the documented regulatory history raises questions that remain unanswered.

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Strategy Unveils New $44B Plan to Fund Bitcoin Purchases

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Strategy Unveils New $44B Plan to Fund Bitcoin Purchases

Strategy is increasingly turning to perpetual preferred stocks to fund its Bitcoin strategy, with the company adding 90,000 BTC to its balance sheet so far this year.

Michael Saylor’s Strategy has announced several capital-raising programs totaling $44.1 billion to fund Bitcoin purchases, including the sale of common shares and two of its dividend-paying equity vehicles.

Strategy plans to raise up to $21 billion by selling Strategy (MSTR) stock and another $21 billion from its high-yield perpetual preferred stock, Stretch (STRC), via new at-the-market programs, the company said in an 8-K filing to the US Securities and Exchange Commission on Monday.

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Strategy also intends to sell up to $2.1 billion worth of Strike (STRK) — another of its perpetual preferred stock offerings. The company didn’t specify a timeline for the issuances, stating that shares may be sold “from time to time.”

Source: Michael Saylor

Strategy has been marketing its securities as a way for investors to gain exposure to Bitcoin, which is currently down nearly 70% from its all-time high. The company is currently carrying an unrealized loss of 6.3% on its Bitcoin holdings.

Strategy’s revised ATM equity program enables it to sell more shares incrementally into the open market rather than relying on fewer large-scale capital raises from external investors, as it previously did through convertible debt. 

Related: Bitcoin spot volumes fall to 2023 lows as BTC rallies remain news-led

Strategy’s preferred stocks, such as STRC and STRK, give investors monthly dividends while enabling Strategy to grow its Bitcoin holdings without issuing additional MSTR common shares.

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Strategy added 90K BTC to its treasury in 3 months

Strategy said it bought 1,031 Bitcoin worth $76.6 million in its latest purchase on Monday, adding to its larger-than-usual purchases this month, which include 17,994 Bitcoin on March 9 and 22,337 Bitcoin on March 16 for a combined $2.9 billion.