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SpiderRock Advisors, LLC

Registered adviser
Location
CHICAGO, IL
Portfolio Value
Mid $6,264,860,432
Diversification
Diversified
Reports for
BlackRock, Inc.
Filing Date
Global Rank
#587 / 7,445 ▲ 77 · as of Sep 2024
Top Industry
Consumer Electronics 20.6%
Period ended 2 years ago
Filed Nov 1, 2024 · 1y
19 quarters · since Mar 2020

Regulatory profile

From Form ADV, the SEC filer profile, 13D/13G type codes and N-CEN, never from the name.

Holder type
Registered adviser
Form ADV roster, Oct 1, 2026
Form ADV adviser
CRD 171992
Roster of Oct 1, 2026
Regulatory AUM
$9,834,015,630
Main clients
Individuals and high net worth (85% of AUM)
Private funds
0 funds
$0 gross assets
Private funds on Schedule D 7.B.(1)
As filed Dec 20, 2024; SEC's bulk Form ADV archive ends with 2024 filings.
No private funds listed.
Form ADV history
Monthly rosters from Dec 2019; each row is a run with the same figures, newest first.
Rosters Regulatory AUM Main clients
Apr 2026 to Oct 2026 $9,834,015,630 Individuals and high net worth (85%)
Apr 2025 to Mar 2026 $5,979,259,343 Other investment advisers (73%)
Apr 2024 to Mar 2025 $4,853,616,658 Other investment advisers (79%)
May 2023 to Mar 2024 $3,016,655,005 Other investment advisers (90%)
Apr 2023 $3,016,655,005 Other investment advisers (90%)
Apr 2022 to Mar 2023 $2,724,457,898 Other investment advisers (90%)
4 earlier changes not shown.

Portfolio style

Measured from the filed 13F common-share book for Sep 30, 2024, never from the firm's own description.

Style
Diversified active
Top 10 weight 46.2%, 19.8 effective positions, active share 41.5% against the S&P 500 as of 2024-09-30; it meets none of the index-like, systematic-like or concentrated tests
Turnover
Turnover unknown
It needs four straight quarters of measured turnover
Horizon
Short horizon
Value-weighted holding period 2.9 quarters (under 4)

Closest benchmark: the S&P 500 as of 2024-09-30, active share 41.5%; sector active share 21.9% against the combined 13F book's sector weights.

Over time 19 measured quarters

How the bands are measured

Style bands measure the filed 13F common-share book each closed quarter, tested in this order. Unknown: under $10,000,000 of valued equity or 5 stocks. Index-like (100+ stocks): active share of 20% or less against the closest benchmark, which is the S&P 500, S&P MidCap 400, S&P SmallCap 600, Russell 1000, Russell 2000, Nasdaq-100 or Dow Jones Industrial Average (weighted by an index-tracking fund's reported holdings or the index's constituents nearest the quarter end, over the names resolved to companies, and only when those are 90%+ of its weight) or every 13F filer's combined book, or index series holding 80%+ of the registered fund assets it advises (N-CEN) and equal to 50%+ of its book. Systematic-like: 500+ stocks, 100%+ annual turnover and a top 10 weight of 25% or less. Concentrated: a top 10 weight of 60%+ or 12 or fewer effective positions. Diversified active: none of these. Turnover is the smaller of buys and sells over average equity value, summed over four quarters: low under 30%, high 100%+. Horizon is the value-weighted number of quarters each position has been held: short under 4, long 12+.

Clone Performance

Build a hypothetical price-return history from this filer's public 13F holdings.

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Portfolio Concentration

620 tracked positions · as of Sep 30, 2024 · Δ vs Jun 30, 2024
Top Position
17.8%
−1.8 pts
Top 5
41.0%
−0.4 pts
Top 10
51.3%
−0.0 pts
HHI
519
Dec 2021 → Sep 2024 · range 418 – 3,297
Diversified−46

Portfolio Trend

19 quarters · across all stocks

Sector Breakdown

As of Sep 30, 2024
Sector % Portfolio Value
Technology 40.3% $2,524,227,545
Unclassified 13.6% $851,425,811
Consumer Cyclical 9.3% $582,582,610
Financial Services 8.3% $520,885,647
Healthcare 7.4% $464,379,478
Consumer Defensive 6.8% $428,826,577
Industrials 5.3% $332,618,263
Communication Services 4.0% $250,671,236
Energy 2.1% $130,593,349
Utilities 1.4% $84,858,213
Basic Materials 1.3% $79,755,666
Real Estate 0.2% $14,036,037

Last Quarter's Activity

Export CSV
Sep 30, 2024 vs Jun 30, 2024

Added To

Positions the filer increased
25 positions
Ticker Δ Shares Shares Value Open
— +201,721 264,038 $0

Trimmed

Positions the filer reduced
25 positions
Ticker Δ Shares Shares Value Open

New Positions

Positions the filer opened this quarter
25 positions
Ticker Shares Value Open
— 26,176 $1,191,269

Sold Out

Positions the filer fully exited
25 positions
Ticker Shares Value Open
— 32,455 $998,315

Portfolio Positions

Export CSV View 13F filing
620 tracked positions · $6,264,860,432 total · filing declares 818 positions · $6,285,410,522 · as of Sep 30, 2024
Showing 1–50 of 620 positions by value · page 1 of 13
Ticker Company Shares Value (USD) % of Portfolio History

Showing the top 50 of 620 positions. Create a free account to see every position, past quarters, search, filters and CSV export.

Covers the securities this platform tracks: U.S.-listed common stock and the put/call positions reported on it. A 13F can also report security types outside that coverage — preferred shares, bonds, warrants, untracked share classes — so the filing's own declared total can exceed the figures above. The source filing is linked at the top of this table.