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Citadel Advisors 13F Portfolio · Ken Griffin

Portfolio Manager
Ken Griffin
Performance
+31.74% (2026 Q2)
AUM (13F)
$875.10B
# of Holdings
6354
Performance Rank
Allocation (Top 20)
20.49%
Latest filing
Q2 2026

2026 Q2 · 13F Analysis

The Liquid AI Core: How Citadel Advisors Booked Q2 2026

Published August 17, 2026 · Based on the SEC 13F filing for 2026 Q2

Key takeaways

  • Banks AI alpha into broad beta via a massive IVV allocation
  • Takes AI from single-name hero bets to chips, tools and bandwidth
  • Builds a new pharma and GLP-1 complex around Eli Lilly and AbbVie
  • Adds classic defensives and energy as a macro shock absorber
  • Cashes in Micron and Nvidia strength to fund fresher AI plumbing

The thesis in one look

Citadel’s Q2 2026 book reads like a fund locking in an exceptional AI-driven run and hardening its capital base. The jump in iShares Core S&P 500 (IVV) to 7.6% of the book, with the stake up +335.3% and about $10.2B added, is the quarter’s headline: this is AI alpha recycled into broad, ultra-liquid beta.

At the same time, technology’s share of the top-50 drops from 54.11% to 32.34%, even though they are still aggressively reshaping the AI complex under the hood. Massive trims in Micron and Nvidia free up billions that are redeployed into semicap tools, storage, and networking, plus a new health care and staples spine.

The result is a barbelled structure: a giant market ETF core, surrounded by targeted bets on AI infrastructure, durable consumer franchises, and a surprisingly muscular bet on big pharma. This is not a retreat from risk; it is a deliberate move from a concentrated, headline-tech profile to a portfolio that can withstand a regime change in rates or AI sentiment.

Portfolio concentration
IVV — 25.2% ($13.24B)AMZN — 4.9% ($2.59B)NVDA — 4.5% ($2.36B)AAPL — 4.0% ($2.11B)MSFT — 2.7% ($1.41B)EA — 2.3% ($1.21B)WBD — 2.3% ($1.19B)LLY — 2.2% ($1.13B)AVGO — 2.1% ($1.10B)GOOGL — 2.0% ($1.07B)Other — 47.9% ($25.19B)
52%in top 10
  • IVV25.2%
  • AMZN4.9%
  • NVDA4.5%
  • AAPL4.0%
  • MSFT2.7%
  • EA2.3%
  • WBD2.3%
  • LLY2.2%
  • AVGO2.1%
  • GOOGL2.0%
  • Other47.9%

Performance History

Performance Metric3-Year Annualized3-Year Cumulative5-Year Annualized5-Year Cumulative
Top 20 Holdings Weighted+28.44%+111.86%+12.16%+77.52%
Top 20 Holdings Unweighted+26.56%+102.72%+9.35%+56.38%

Fund Performance vs S&P 500

Exposure

Sector allocation

Current sector weights across the reported book, with the shift since last quarter.

Technology32.3%−21.8%
Unclassified26.2%+16.2%
Consumer Discretionary16.1%+0.8%
Finance5.3%+0.3%
Health Care5.2%+3.5%
Industrials4.2%−1.3%
Consumer Staples4.2%+1.0%
Energy2.2%+1.0%
Utilities1.9%−0.3%
Real Estate1.4%−0.2%
Telecommunications0.9%+0.6%

Portfolio

Portfolio allocation

The fund's largest reported positions.

Top Holdings

Top 10 holdings

StockCompany% Port.SharesValueActivityOwnershipAvg. CostDate
IVV
ISHARES TR
7.6%17.68M$13.24B
+335.30%(+13.62M)
2025-Q2: 17.1K shares2025-Q3: 45.1K shares2025-Q4: 74.3K shares2026-Q1: 4.06M shares2026-Q2: 17.68M shares
$616.81(+26.28%)
2026-06-30
AMZN
AMAZON COM INC
1.49%10.88M$2.59B
+34.30%(+2.78M)
2025-Q2: 5.34M shares2025-Q3: 3.24M shares2025-Q4: 14.14M shares2026-Q1: 8.10M shares2026-Q2: 10.88M shares
$219.78(+19.46%)
2026-06-30
NVDA
NVIDIA CORPORATION
1.36%11.82M$2.36B
-36.70%(-6.85M)
2025-Q2: 8.09M shares2025-Q3: 9.82M shares2025-Q4: 21.56M shares2026-Q1: 18.66M shares2026-Q2: 11.82M shares
$162.62(+39.01%)
2026-06-30
AAPL
APPLE INC
1.21%7.30M$2.11B
+39.94%(+2.08M)
2025-Q2: 2.36M shares2025-Q3: 4.92M shares2025-Q4: 5.52M shares2026-Q1: 5.21M shares2026-Q2: 7.30M shares
$240.00(+27.24%)
2026-06-30
MSFT
MICROSOFT CORP
0.81%3.77M$1.41B
+42.92%(+1.13M)
2025-Q2: 1.98M shares2025-Q3: 3.97M shares2025-Q4: 3.26M shares2026-Q1: 2.64M shares2026-Q2: 3.77M shares
$438.25(+10.91%)
2026-06-30
EA
ELECTRONIC ARTS INC
0.7%5.91M$1.21B
+102.96%(+3.00M)
2025-Q2: 467.1K shares2025-Q3: 525.5K shares2025-Q4: 960.7K shares2026-Q1: 2.91M shares2026-Q2: 5.91M shares
$198.98(+5.38%)
2026-06-30
WBD
WARNER BROS DISCOVERY INC
0.68%44.59M$1.19B
+51.76%(+15.21M)
2025-Q2: 15.96M shares2025-Q3: 6.39M shares2025-Q4: 11.78M shares2026-Q1: 29.38M shares2026-Q2: 44.59M shares
$24.73(+12.64%)
2026-06-30
LLY
ELI LILLY & CO
0.65%945.5K$1.13B
+291.15%(+703.74K)
2025-Q2: 853.3K shares2025-Q3: 1.15M shares2025-Q4: 699.8K shares2026-Q1: 241.7K shares2026-Q2: 945.5K shares
$969.31(+21.67%)
2026-06-30
AVGO
BROADCOM INC
0.63%2.90M$1.10B
-10.92%(-355.68K)
2025-Q2: 204.1K shares2025-Q3: 1.91M shares2025-Q4: 3.86M shares2026-Q1: 3.26M shares2026-Q2: 2.90M shares
$319.00(+23.43%)
2026-06-30
GOOGL
ALPHABET INC
0.61%2.99M$1.07B
+5.30%(+150.50K)
2025-Q2: 623.0K shares2025-Q3: 1.87M shares2025-Q4: 2.92M shares2026-Q1: 2.84M shares2026-Q2: 2.99M shares
$228.30(+50.99%)
2026-06-30

Portfolio changes

What the fund actually did

Every reported change this quarter, grouped by direction. The signal is in the rotation, not any single trade.

Added to
36
IVVISHARES TR+335.3%
LLYELI LILLY & CO+291.1%
KLACKLA CORP+6607.7%
ABBVABBVIE INC+546.5%
+32 more
Trimmed
14
MUMICRON TECHNOLOGY INC-86.9%
NVDANVIDIA CORPORATION-36.7%
METAMETA PLATFORMS INC-38.8%
TSLATESLA INC-41.4%
+10 more

Where conviction is rising: AI plumbing, platforms and pharma

The biggest adds by dollars show Citadel leaning into three themes: AI infrastructure beyond the usual suspects, platform consumer/tech, and a new pharmaceutical profit pool. The enormous reload into Eli Lilly (LLY), up +291.1% with about $844.1M added, and AbbVie (ABBV), up +546.5% with about $674.3M added, anchors a high-conviction call on obesity, immunology, and large-cap pharma pricing power.

On the AI side, they are clearly reallocating away from over-earned winners into the picks-and-shovels. KLA (KLAC) explodes +6607.7% to roughly $766.7M despite being deeply underwater at -76.8% vs cost — a rare move that signals process-based conviction, not P&L chasing. Seagate (STX) climbs +582.2% with about $622.2M added, and Texas Instruments (TXN) is up +459.3%, pointing to a long runway for memory, storage, and analog in an AI-heavy compute world.

Consumer and software platforms remain core growth funding ideas, not afterthoughts. Amazon (AMZN) gets roughly $662.5M more capital, Apple (AAPL) and Microsoft (MSFT) are up around 40–43% in shares, and Electronic Arts (EA) more than doubles. In software, Snowflake (SNOW) is up +116.2%, and Arista Networks (ANET) rises +411.9%, signaling a belief that data infrastructure and high-speed networking will monetize the AI boom more steadily than the most speculative model plays.

Conviction

The big buys

The biggest dollar adds this quarter — where conviction is rising.

PositionChangePortfolio weightValue
IVVISHARES TRAdded 335.3%+$10.20B7.6%$13.24B
LLYELI LILLY & COAdded 291.1%+$844.1M0.7%$1.13B
KLACKLA CORPAdded 6607.7%+$755.2M0.4%$766.7M
ABBVABBVIE INCAdded 546.5%+$674.3M0.5%$797.6M
AMZNAMAZON COM INCAdded 34.3%+$662.5M1.5%$2.59B
STXSEAGATE TECHNOLOGY HLDNGS PLAdded 582.2%+$622.2M0.4%$729.1M
EAELECTRONIC ARTS INCAdded 103.0%+$614.4M0.7%$1.21B
ABTABBOTT LABORATORIESAdded 348.7%+$606.3M0.5%$780.1M

Dollar changes estimated at current prices (shares added × current price); top-50 current positions only.

What they’re selling: cashing in AI winners and cooling cyclical risk

The funding list is dominated by one message: take money off the table where AI and cyclicals have already paid. Micron (MU) is the standout, with an -86.9% share cut and about $4.61B coming out after a massive +414.3% gain vs cost; that is a textbook harvest of a fully priced AI-memory story.

Nvidia (NVDA) is next, down -36.7% with roughly $1.37B in capital redeployed despite still being up 38.5% vs cost. Citadel is not abandoning GPUs; it is capping single-name risk and spreading the bet across semis and tools. Broadcom (AVGO) and Applied Materials (AMAT) are also trimmed modestly, another sign of locking in substantial gains.

Outside pure tech, they are humble about where their thesis looks less compelling. Tesla (TSLA) is cut -41.4% and Norfolk Southern (NSC) -39.5%, both with negative or middling economics relative to stronger opportunities elsewhere. Meta (META), down -38.8% and underwater at -11.7% vs cost, looks like a risk-budget casualty in favor of cleaner, higher-conviction AI and cloud exposure.

Sector shift: from concentrated tech to a three-engine portfolio

Under the sector hood, Q2 is about transforming one dominant tech engine into three: diversified tech, health care, and defensives. Tech’s top-50 weight drops from 54.11% to 32.34%, even as they add aggressively to names like KLAC, STX, TXN, Lam Research (LRCX) and Arista — the cut comes from slashing an overgrown Micron and paring high-beta leaders like Nvidia and Meta.

Health care jumps from 1.61% to 5.16% on the back of LLY, ABBV and Abbott (ABT), which together now represent a genuine second leg of earnings power. That’s a clear statement: GLP-1s, immunology, medtech and diabetes are no longer a trade; they’re a structural theme in this book.

The third leg is a blend of staples, energy and quality financials. Consumer staples rise from 3.19% to 4.23% via Keurig Dr Pepper (KDP), Mondelez (MDLZ), Coca-Cola (KO) and a still-sized CVS. Energy doubles from 1.14% to 2.16% through Chevron (CVX) and Exxon (XOM), while finance creeps up to 5.31% with new capital into BlackRock (BLK), Wells Fargo (WFC) and S&P Global (SPGI). All of this is wrapped in the 26.2% “unclassified” bucket where IVV and Berkshire Hathaway (BRK.B) sit — effectively turning a hyper-tech book into a market-plus, theme-satellite construct.

What this setup implies for Citadel’s next act

Taken together, this quarter says Citadel wants to stay long the AI and U.S. growth story, but with less path dependency and headline risk. Parking 7.6% of the book in IVV while still running concentrated AI plumbing, platform, and pharma bets gives them room to be wrong on individual names without blowing up the aggregate P&L.

Expect the AI theme to keep migrating from obvious GPU/memory winners into more infrastructure-heavy and bandwidth-sensitive stories — more Lam, KLA, Arista, storage, and data platforms, funded by any further over-earning in the old leaders. The build-out in pharma, consumer staples and integrated oils suggests a willingness to own cash-flow compounders that work under higher-for-longer rates and in choppier tapes.

The message is that Citadel is not derisking from markets; it is derisking from narratives. Q2 2026 positions the book to keep monetizing AI and U.S. consumption while being far less hostage to whether a handful of mega-cap tech tickers keep surprising on the upside.

Rotation

How the book's themes shifted

Portfolio weight by theme, this quarter versus last.

2026 Q12026 Q2Tech & AI complexTech & AI complex — 2026 Q1: 54.1%54.1%Tech & AI complex — 2026 Q2: 32.3%32.3% −21.8ptBroad beta & conglomerates (IVV, BRK.B)Broad beta & conglomerates (IVV, BRK.B) — 2026 Q1: 10%10%Broad beta & conglomerates (IVV, BRK.B) — 2026 Q2: 26.2%26.2% +16.2ptHealth care & pharmaHealth care & pharma — 2026 Q1: 1.6%1.6%Health care & pharma — 2026 Q2: 5.2%5.2% +3.6ptStaples, energy & utilitiesStaples, energy & utilities — 2026 Q1: 6.6%6.6%Staples, energy & utilities — 2026 Q2: 8.3%8.3% +1.7ptConsumer discretionary & industrial cyclicalsConsumer discretionary & industrial cyclicals — 2026 Q1: 20.9%20.9%Consumer discretionary & industrial cyclicals — 2026 Q2: 20.4%20.4% −0.5pt
Portfolio weight by theme, 2026 Q1 (estimated at current prices) vs 2026 Q2.

Frequently asked questions

What did Citadel Advisors LLC buy in 2026 Q2?+

In 2026 Q2, Citadel Advisors significantly increased its stake in iShares Core S&P 500 (IVV), added heavily to Eli Lilly, AbbVie and Abbott, and ramped exposure to AI infrastructure names like KLA, Seagate, Texas Instruments, Lam Research, Snowflake and Arista Networks.

What did Citadel Advisors LLC sell in 2026 Q2?+

Citadel’s largest trims were in Micron Technology, Nvidia and several other AI and cyclical names, including Meta Platforms, Tesla, Norfolk Southern, Intel, Applied Materials and Broadcom, mainly locking in substantial gains and reducing single-name risk.

What is Citadel Advisors LLC's biggest holding in the 2026 Q2 filing?+

The largest disclosed position is iShares Core S&P 500 ETF (IVV) at 7.6% of the reported long equity book, following a more than fourfold increase in shares during the quarter.

How is Citadel Advisors LLC positioned toward technology and AI after 2026 Q2?+

Citadel remains heavily invested in technology and AI but is shifting from concentrated bets in leaders like Micron and Nvidia toward a broader mix of semiconductors, equipment, storage, networking and cloud data platforms, while reducing tech’s overall portfolio share.

Which defensive sectors did Citadel Advisors LLC emphasize in 2026 Q2?+

Citadel added meaningfully to health care through Eli Lilly, AbbVie and Abbott, increased consumer staples exposure via Keurig Dr Pepper, Mondelez and Coca-Cola, and boosted energy positions in Chevron and Exxon Mobil, creating a more defensive earnings base.

Did Citadel Advisors LLC increase or decrease its financials exposure in 2026 Q2?+

Financials exposure edged higher, with added capital to BlackRock, Wells Fargo and S&P Global, while JPMorgan was trimmed slightly, lifting finance to about 5.31% of the disclosed top-50 portfolio.

Source filings

Holdings on this page are parsed from Citadel Advisors LLC’s Form 13F filings with the U.S. Securities and Exchange Commission (CIK 1423053). View Citadel Advisors LLC’s 13F filings on SEC

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