CITADEL ADVISORS LLC SMWB — SIMILARWEB LTD

Ownership history in CITADEL ADVISORS LLC  ·  45 quarters on record

AI Ownership Summary

CITADEL ADVISORS LLC reported SIMILARWEB LTD (SMWB) in 45 quarterly 13F filings from 2023 Q4 through 2025 Q4. The latest visible filing shows SMWB at 0.00% of the fund.

This page tracks quarterly shares, estimated market value, portfolio weight, filing dates, and disclosure-aligned stock prices directly from SEC EDGAR 13F filings. Older history is available after unlock; the visible window still shows the most recent pattern.

What this SMWB ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was CITADEL ADVISORS LLC's position in SIMILARWEB LTD, and how did that conviction change over time? You can read the holding window, peak weight, latest reported size, disclosure timing, and quarter-by-quarter changes without piecing the story together from raw SEC rows.

Freshest filing
Latest Reported Filing
2025 Q4

SMWB was reported at 0.00% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
0.0% in 2024 Q3

Peak weight helps separate a token disclosure from a real conviction holding the fund genuinely cared about.

Time in book
Holding Window
2023 Q4 to 2025 Q4

Longer holding windows often tell a very different story from short-lived tactical trades or one-quarter experiments.

Decision context
Why It Matters
Position size beats headlines

Knowing that a fund owned a stock is useful. Knowing whether it was a 0.20% placeholder or a true high-conviction position is where the signal actually starts.

SMWB stock page CITADEL ADVISORS LLC fund profile CITADEL ADVISORS LLC full holdings
How CITADEL ADVISORS LLC held SMWB — position size vs. price
% of Fund (quarterly)    SMWB price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 24 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2025 Q4 ADDED — — — 285,900 +85,786 +42.9% 0.00% $2.1M 2026-02-14 (Est.) $3.98
2025 Q4 REDUCED 67.6% -65.2% ✅ 200,114 -417,386 -67.6% 0.00% $1.5M 2026-02-14 (Est.) $3.98
2025 Q3 ADDED — — — 617,500 +576,500 +1406.1% 0.00% $5.7M 2025-11-14 $7.35
2025 Q3 REDUCED 84.3% -21.9% ✅ 41,000 -219,869 -84.3% 0.00% $381K 2025-11-14 $7.35
2025 Q3 REDUCED 36.6% -21.9% ✅ 260,869 -150,531 -36.6% 0.00% $2.4M 2025-11-14 $7.35
2025 Q2 ADDED — — — 411,400 +346,900 +537.8% 0.00% $3.2M 2025-08-14 $8.39
2025 Q2 REDUCED 92.7% +22.4% ❌ 64,500 -815,765 -92.7% 0.00% $506K 2025-08-14 $8.39
2025 Q2 ADDED — — — 880,265 +624,965 +244.8% 0.00% $6.9M 2025-08-14 $8.39
2025 Q1 REDUCED 48.9% -5.2% ✅ 255,300 -244,700 -48.9% 0.00% $2.1M 2025-05-15 $7.36
2025 Q1 ADDED — — — 500,000 +417,500 +506.1% 0.00% $4.1M 2025-05-15 $7.36
2025 Q1 ADDED — — — 82,500 +67,800 +461.2% 0.00% $682K 2025-05-15 $7.36
2024 Q4 REDUCED 89.6% -41.6% ✅ 14,700 -126,400 -89.6% 0.00% $208K 2025-02-14 $10.76
2024 Q4 REDUCED 45.1% -41.6% ✅ 141,100 -116,024 -45.1% 0.00% $2.0M 2025-02-14 $10.76
2024 Q4 ADDED — — — 257,124 +244,524 +1940.7% 0.00% $3.6M 2025-02-14 $10.76
2024 Q3 REDUCED 99.3% +60.1% ❌ 12,600 -1,668,335 -99.3% 0.00% $111K 2024-11-14 $11.85
2024 Q3 ADDED — — — 1,680,935 +1,571,630 +1437.8% 0.00% $14.9M 2024-11-14 $11.85
2024 Q2 ADDED — — — 109,305 +108,805 +21761.0% 0.00% $849K 2024-08-14 $7.99
2024 Q2 REDUCED 97.1% +13.8% ❌ 500 -16,696 -97.1% 0.00% $4K 2024-08-14 $7.99
2024 Q1 ADDED — — — 17,196 +16,696 +3339.2% 0.00% $155K 2024-05-15 $7.58
2024 Q1 REDUCED 86.1% -16.7% ✅ 500 -3,100 -86.1% 0.00% $4K 2024-05-15 $7.58
2024 Q1 ADDED — — — 3,600 +2,800 +350.0% 0.00% $32K 2024-05-15 $7.58
2023 Q4 ADDED — — — 800 +700 +700.0% 0.00% $4K 2024-02-14 $7.56
2023 Q4 REDUCED 99.9% +64.9% ❌ 100 -93,292 -99.9% 0.00% $533 2024-02-14 $7.56
2023 Q4 ADDED — — — 93,392 +92,492 +10276.9% 0.00% $498K 2024-02-14 $7.56
21 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding SMWB

As of 2026 Q1 — sorted by position size

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FAQ About CITADEL ADVISORS LLC and SMWB

These are the practical questions this page is built to answer before you even open the full history table.

How long has CITADEL ADVISORS LLC reported owning SMWB?

CITADEL ADVISORS LLC reported SMWB across 24 quarterly 13F filings, from 2023 Q4 through 2025 Q4.

What was the largest reported SMWB position in CITADEL ADVISORS LLC's portfolio?

The largest reported portfolio weight for SMWB was 0.00% in 2024 Q3.

What is the latest reported SMWB position on this page?

The most recent filing on this page is 2025 Q4, when CITADEL ADVISORS LLC reported 285,900 shares, equal to 0.00% of portfolio, with an estimated market value of $2.1M.

What does the chart on this SMWB ownership page compare?

The chart compares CITADEL ADVISORS LLC's quarterly SMWB portfolio weight with the stock's indexed share price, so you can see whether the fund was building, trimming, or holding the position as price moved.

How well did CITADEL ADVISORS LLC time their SMWB position?

Based on 13F filing dates vs. subsequent SMWB price moves, CITADEL ADVISORS LLC correctly timed 21 out of 44 reported position changes (48%). The annualised alpha on SMWB relative to SPY over the holding period was -14.4%.

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