DOSSIER · 13F-HR · Q1 2026

ADVENT CAPITAL MANAGEMENT /DE/

$3.6B in tracked AUM across 215 positions as of Q1 2026.

AC
CIK 0001097278 · last filed Mar 31, 2026
Total AUM
$3.6B
as of Q1 2026
Holdings
215
positions
Whale Score
56
56
tracked
Activity
no data
changes this Q
AI Analysis · Q1 2026

Somewhere in the middle of this reporting period, Advent Capital Management's largest position — the SPDR S&P 500 ETF — went from 860,000 shares to 342,500, a real 60.2% reduction and a $336.6 million outflow, by far the largest single move anywhere in the fund's $3.63 billion, 215-position book. Zoom out and that cut sits inside a much broader shrinkage: total assets fell 27.1% this quarter, with real reductions across convertible bond positions in Duke Energy (-60.0%), Live Nation (-62.0%), Meritage Homes (-49.7%), and NextEra Energy Capital (-46.0%). But the fund kept buying selectively even as it shrank — Datadog's convertible more than doubled (+110.4%, a real $40.1 million purchase), and ten new convertible positions joined, including AeroVironment ($56.2 million) and a fresh Wells Fargo preferred exit was replaced by other capital-structure bets.

Zoom out: a broad, real shrinkage across convertibles

That ETF cut wasn't isolated — it sits inside a quarter where total assets fell 27.1%, from $4.98 billion to $3.63 billion, and the reduction shows up as genuine selling across many of the fund's largest convertible bond positions. Duke Energy's convertible fell 60.0% in position size (a real $48.2 million outflow), Live Nation Entertainment's fell 62.0% ($44.0 million real outflow), NextEra Energy Capital's fell 46.0% ($41.7 million real outflow), Meritage Homes' fell 49.7% ($51.0 million real outflow, the largest real dollar reduction after the ETF), CenterPoint Energy's fell 29.7% ($20.7 million real outflow), and Ventas Realty's fell 15.9% ($17.6 million real outflow). A Wells Fargo preferred position worth $191.8 million was closed out entirely — the largest full exit in the book.

Analysis generated by 13F Insight from SEC Form 13F filing data · Q1 2026. Methodology

Quarter at a glance — Q1 2026

Position-change comparison pending.

No quarter-over-quarter changes available.

Top 10 holdings

By portfolio weight as of Q1 2026.

#HoldingValueSharesWeight
01
SPY
State Street SPDR S&P 500 ETF
$223M343K6.1%
02
BAC 7.25 PERP L
BANK OF AMERICA CORP
$178M149K4.9%
03
90353TAM2
UBER TECHNOLOGIES INC
$143M118.7M4.0%
04
NEE 7.299 06/01/27
NEXTERA ENERGY INC
$110M1.9M3.0%
05
VTR 3.75 06/01/26
VENTAS REALTY LP
$93M61.9M2.6%
06
GPN 1.5 03/01/31
GLOBAL PAYMENTS INC
$89M100.3M2.4%
07
CMS 3.375 05/01/28
CMS ENERGY CORP
$85M74.2M2.3%
08
PPL 2.875 03/15/28
PPL CAPITAL FUNDING INC
$83M70.4M2.3%
09
KKR 6.25 03/01/28 D
KKR & CO INC
$83M2.0M2.3%
10
APO 6.75 07/31/26
APOLLO GLOBAL MANAGEMENT
$77M1.3M2.1%

Filing history

2026Q1Mar 31
$3.6B 27.1%
215 positionsView →
2025Q4Dec 31
$5.0B 24.6%
228 positionsView →
2025Q3Sep 30
$4.0B 14.9%
207 positionsView →
2025Q2Jun 30
$4.7B 17.7%
237 positionsLocked
2025Q1Mar 31
$4.0B 7.9%
194 positionsLocked
2024Q4Dec 31
$4.3B 5.6%
209 positionsLocked
2024Q3Sep 30
$4.1B 1.4%
227 positionsLocked
2024Q2Jun 30
$4.2B 5.9%
198 positionsLocked
2024Q1Mar 31
$3.9B 9.8%
187 positionsLocked
2023Q4Dec 31
$4.4B 1.4%
184 positionsLocked
2023Q3Sep 30
$4.3B 16.8%
201 positionsLocked
2023Q2Jun 30
$5.2B 2.2%
231 positionsLocked
Showing 12 of 100