Every One of Ken Griffin’s Top 15 Holdings Is a Put Option: Inside Citadel’s $666B Q4 2025 Filing

Every single one of Ken Griffin’s top 15 holdings is a put option. Not a stock. Not a call. A put. Citadel Advisors just disclosed $665.9 billion across 15,403 positions for Q4 2025, and the entire top of the book reads like a crash insurance policy: SPY puts, QQQ puts, Tesla puts, NVIDIA puts. This is what a $666B hedge machine looks like from the inside.

TL;DR: Citadel Advisors Q4 2025 Filing at a Glance

• 13F AUM: $665.9B (up 1.3% from $657.1B in Q3 2025)
• Total Holdings: 15,403 positions (down from 15,551 in Q3)
• Top Holding: SPY Put at $39.5B (5.93% of portfolio)
• Top-10 Concentration: $199.5B (30.0%) — all put options
• Filing Date: February 17, 2026 (report period: December 31, 2025)
• Whale Score: 75.50
• AUM Growth (2-year): From $518.5B (Q1 2024) to $665.9B (+28.4%)
• Key Shift: SPY/QQQ put notional decreased QoQ while Tesla puts increased

The Put Option Fortress: What Citadel’s Top Holdings Actually Mean

Before drawing conclusions, understand what you’re looking at. Citadel is a multi-strategy hedge fund and market maker. The 13F shows the long side only — it doesn’t show short positions, the other leg of options spreads, or the underlying hedges. When Citadel holds $39.5B in SPY puts, it’s almost certainly paired with long SPY exposure, short futures, or other offsetting positions not visible in the 13F.

That said, the composition still tells us something. The fact that Citadel’s largest reported positions are all puts — not the underlying equities — reveals the firm’s primary activity: options market-making at massive scale. Griffin’s operation sells options to the market and warehouses the inventory, hedging delta risk in real time.

QoQ Shifts: Where Did Ken Griffin Adjust?

Comparing Q3 to Q4 2025 reveals tactical adjustments:

Position	Q3 2025	Q4 2025	Change
SPY Put	$46.5B (7.08%)	$39.5B (5.93%)	−15% notional
QQQ Put	$43.3B (6.58%)	$36.3B (5.45%)	−16% notional
TSLA Put	$32.0B (4.86%)	$34.5B (5.18%)	+8% notional
NVDA Put	$28.5B (4.34%)	$28.8B (4.33%)	Flat
AMZN Put	$10.1B (1.53%)	$13.2B (1.98%)	+31% notional
GLD Put	$11.8B (1.80%)	$12.5B (1.88%)	+6% notional

The pattern: Citadel reduced broad index hedge exposure (SPY, QQQ) while increasing single-name put positions in Tesla, Amazon, and gold. This suggests the options market demanded more single-stock downside protection in Q4 — likely driven by elevated volatility around earnings season and macro uncertainty.

15,403 Holdings: The Long Tail Behind the Puts

Beyond the put-heavy top 15, Citadel maintains one of the broadest portfolios on Wall Street. At 15,403 positions, it holds roughly 5x more line items than Norges Bank (1,577) despite a smaller AUM. This breadth reflects Citadel’s multi-strategy approach: market-making, stat-arb, event-driven, and fundamental equity — each strategy contributing hundreds of positions.

The holdings count has been slowly declining from a peak of 17,980 in Q1 2024, suggesting Citadel is consolidating positions or exiting less profitable strategies.

AUM Growth: Steady Compounding at Scale

Citadel’s 13F AUM trajectory shows remarkably steady growth with low volatility:

From $518.5B in Q1 2024 to $665.9B in Q4 2025, Citadel grew 28.4% over 8 quarters — an annualized rate of roughly 14%. For a fund that earns returns primarily from market-making spreads, volatility harvesting, and alpha generation rather than directional bets, this is exceptional consistency.

What Analysts Might Misread

1. “Citadel is massively bearish — look at all those puts”

Wrong. The puts are inventory from market-making, not directional bets. Citadel sells options to clients who want protection, then hedges the delta. The 13F only shows the long put side. The short side (calls, short stock, futures) isn’t disclosed.

2. “$666B means Griffin controls $666B of stocks”

The 13F value includes notional option values. The actual economic exposure after hedging is likely a fraction of the headline number. 13F reporting rules require showing the notional value of options, which inflates the apparent AUM.

3. “The declining holdings count means Citadel is shrinking”

Holdings dropped from 17,980 to 15,403 while AUM grew 28%. Citadel is concentrating into larger, more efficient positions — not shrinking. Fewer positions with more capital per position is a sign of operational maturity.

Frequently Asked Questions

Why are all of Citadel’s top holdings put options?

Citadel is one of the world’s largest options market makers. It holds inventory of puts from selling downside protection to other market participants. These aren’t bearish bets — they’re the result of market-making activity.

How much does Citadel Advisors actually manage?

The $665.9B 13F AUM includes notional options values. Citadel’s actual hedge fund AUM is estimated at $65-70 billion, with the rest being market-making inventory and notional exposure.

What changed in Citadel’s portfolio between Q3 and Q4 2025?

Citadel reduced broad index put exposure (SPY down 15%, QQQ down 16%) while increasing single-name puts (Tesla +8%, Amazon +31%). Gold puts also increased 6%.

Is Ken Griffin bearish on the stock market?

The 13F alone cannot answer this. The put positions visible in the filing are offset by undisclosed hedges. Griffin’s actual market view would be reflected in Citadel’s net exposure, which is not publicly available.

How does Citadel compare to other large 13F filers?

At $665.9B, Citadel is among the top-5 largest 13F filers alongside Vanguard, Norges Bank, and BlackRock. Unlike those passive/sovereign investors, Citadel’s portfolio is dominated by options positions.