Cubist Systematic Strategies, LLC LUMN — LUMEN TECHNOLOGIES INC

Ownership history in Cubist Systematic Strategies, LLC  ·  33 quarters on record

AI Ownership Summary

Cubist Systematic Strategies, LLC reported LUMEN TECHNOLOGIES INC (LUMN) in 33 quarterly 13F filings from 2024 Q1 through 2025 Q3. Peak portfolio weight reached 0.08% in 2024 Q4. The latest visible filing shows LUMN at 0.02% 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 LUMN ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was Cubist Systematic Strategies, LLC's position in LUMEN TECHNOLOGIES INC, 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 Q3

LUMN was reported at 0.02% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
0.08% in 2024 Q4

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

Time in book
Holding Window
2024 Q1 to 2025 Q3

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.

LUMN stock page Cubist Systematic Strategies, LLC fund profile Cubist Systematic Strategies, LLC full holdings
How Cubist Systematic Strategies, LLC held LUMN — position size vs. price
% of Fund (quarterly)    LUMN price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 13 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2025 Q3 REDUCED 81.3% +23.4% ❌ 590,400 -2,563,018 -81.3% 0.02% $3.6M 2025-11-14 (Est.) $7.99
2025 Q2 ADDED — — — 3,153,418 +2,563,018 +434.1% 0.06% $13.8M 2025-08-14 $4.34
2025 Q2 REDUCED 11.8% +34.5% ❌ 590,400 -79,027 -11.8% 0.01% $2.6M 2025-08-14 $4.34
2025 Q1 ADDED — — — 669,427 +570,727 +578.2% 0.02% $2.6M 2025-05-15 $4.18
2025 Q1 REDUCED 91.8% +11.7% ❌ 98,700 -1,112,300 -91.8% 0.00% $387K 2025-05-15 $4.18
2025 Q1 REDUCED 17.1% +11.7% ❌ 1,211,000 -249,500 -17.1% 0.03% $4.7M 2025-05-15 $4.18
2024 Q4 REDUCED 41.2% -26.2% ✅ 1,460,500 -1,021,860 -41.2% 0.05% $7.8M 2025-02-14 $4.60
2024 Q4 ADDED — — — 2,482,360 +2,184,860 +734.4% 0.08% $13.2M 2025-02-14 $4.60
2024 Q4 ADDED — — — 297,500 +285,200 +2318.7% 0.01% $1.6M 2025-02-14 $4.60
2024 Q3 REDUCED 87.2% -23.9% ✅ 12,300 -84,007 -87.2% 0.00% $87K 2024-11-14 $8.63
2024 Q3 REDUCED 89.1% -23.9% ✅ 96,307 -784,393 -89.1% 0.00% $684K 2024-11-14 $8.63
2024 Q3 ADDED — — — 880,700 +696,410 +377.9% 0.04% $6.3M 2024-11-14 $8.63
2024 Q1 ADDED — — — 184,290 +83,645 +83.1% 0.00% $287K 2024-05-15 $1.30
20 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding LUMN

As of 2026 Q2 — sorted by position size

CoreCap Advisors, LLC 3Y 0.0% Versant Capital Management, Inc 3Y 7Y 0.0% Dogwood Wealth Management LLC 0.0% MJT & Associates Financial Advisory Group, Inc. 0.0% Noble Wealth Management PBC 0.0% MassMutual Private Wealth & Trust, FSB 3Y 7Y 0.0% Cedar Mountain Advisors, LLC 3Y 0.0% Kozak & Associates, Inc. 3Y 0.0% Sarver Vrooman Wealth Advisors 0.0%

FAQ About Cubist Systematic Strategies, LLC and LUMN

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

How long has Cubist Systematic Strategies, LLC reported owning LUMN?

Cubist Systematic Strategies, LLC reported LUMN across 13 quarterly 13F filings, from 2024 Q1 through 2025 Q3.

What was the largest reported LUMN position in Cubist Systematic Strategies, LLC's portfolio?

The largest reported portfolio weight for LUMN was 0.08% in 2024 Q4.

What is the latest reported LUMN position on this page?

The most recent filing on this page is 2025 Q3, when Cubist Systematic Strategies, LLC reported 590,400 shares, equal to 0.02% of portfolio, with an estimated market value of $3.6M.

What does the chart on this LUMN ownership page compare?

The chart compares Cubist Systematic Strategies, LLC's quarterly LUMN 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 Cubist Systematic Strategies, LLC time their LUMN position?

Based on 13F filing dates vs. subsequent LUMN price moves, Cubist Systematic Strategies, LLC correctly timed 22 out of 32 reported position changes (69%). The annualised alpha on LUMN relative to SPY over the holding period was -20.3%.

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