CHI · Calamos Convertible Opportunities & Income Fund

$12.31 -0.26 (-2.07%) At close · Jul 28

Market Cap

$993.50M

80.71M

Portfolio holdings reported by registered funds to the SEC on Form N-PORT — the individual securities a fund owns. Only mutual funds, ETFs and closed-end funds file N-PORT, so operating companies show no data.

CALAMOS CONVERTIBLE OPPORTUNITIES & INCOME FUND

Reported 2026-04-30

Net Assets

$967,800,490

Total Assets

$1,503,623,475

Holdings

603

Filed

2026-06-26

Holding	CUSIP	Balance	Units	Value	% Net Assets	Category	Country
WESTERN DIGITAL CORP	958102AT2	4,250,000	PA	$48,696,628	5.03%	DBT	US
LUMENTUM HOLDINGS INC	55024UAJ8	9,500,000	PA	$46,312,785	4.79%	DBT	US
BLOOM ENERGY CORP	093712AN7	17,250,000	PA	$30,030,008	3.10%	DBT	US
BOEING CO/THE	097023204	401,365	NS	$28,978,553	2.99%	EP	US
MKS INC	55306NAB0	14,250,000	PA	$27,867,300	2.88%	DBT	US
AKAMAI TECHNOLOGIES INC	00971TAP6	18,000,000	PA	$23,628,960	2.44%	DBT	US
ON SEMICONDUCTOR CORP	682189AU9	17,250,000	PA	$21,006,188	2.17%	DBT	US
ORACLE CORP	68389X204	422,515	NS	$20,563,805	2.12%	EP	US
DIGITAL REALTY TRUST LP	25389JAX4	18,250,000	PA	$20,492,560	2.12%	DBT	US
BWX TECHNOLOGIES INC	05605HAD2	18,500,000	PA	$20,089,520	2.08%	DBT	US
PPL CORPORATION	69351T866	385,170	NS	$19,427,975	2.01%	EP	US
CENTERPOINT ENERGY INC	15189TBQ9	18,000,000	PA	$19,099,800	1.97%	DBT	US
CLOUDFLARE INC	18915MAE7	16,500,000	PA	$19,009,815	1.96%	DBT	US
ADVANCED ENERGY IND	007973AE0	6,500,000	PA	$18,536,310	1.92%	DBT	US
LIVE NATION ENTERTAINMEN	538034BC2	16,500,000	PA	$18,345,525	1.90%	DBT	US
ULTRA CLEAN HOLDINGS INC	90385VAA5	14,500,000	PA	$18,020,165	1.86%	DBT	US
CYBERARK SOFTWARE LTD	23248VAC9	16,500,000	PA	$17,978,070	1.86%	DBT	IL
UBER TECHNOLOGIES INC	90353TAM2	14,500,000	PA	$17,761,485	1.84%	DBT	US
TERAWULF INC	88080TAC8	8,500,000	PA	$16,409,590	1.70%	DBT	US
CIPHER DIGITAL INC	17253JAB2	11,500,000	PA	$15,976,490	1.65%	DBT	US
SOUTHERN CO	842587842	285,000	NS	$14,828,550	1.53%	EP	US
MACOM TECH SOLUTIONS	55405YAD2	8,000,000	PA	$14,113,840	1.46%	DBT	US
SNAP INC	83304AAK2	16,250,000	PA	$13,747,663	1.42%	DBT	US
IREN LTD	46270CAE9	15,500,000	PA	$13,425,325	1.39%	DBT	AU
RIVIAN AUTO INC	76954AAB9	11,500,000	PA	$13,187,970	1.36%	DBT	US
DATADOG INC	23804LAD5	13,000,000	PA	$13,034,450	1.35%	DBT	US
DOORDASH INC	25809KAA3	13,250,000	PA	$12,668,855	1.31%	DBT	US
LYFT INC	55087PAE4	12,500,000	PA	$12,239,250	1.26%	DBT	US
SEAGATE HDD CAYMAN	81180WBL4	1,500,000	PA	$12,226,620	1.26%	DBT	KY
MICROCHIP TECHNOLOGY INC	595017302	152,495	NS	$11,996,782	1.24%	EP	US
SNOWFLAKE INC	833445AD1	9,250,000	PA	$10,747,298	1.11%	DBT	US
ALBEMARLE CORP	012653200	132,880	NS	$10,356,667	1.07%	EP	US
STRATEGY INC	594972AN1	8,250,000	PA	$10,032,248	1.04%	DBT	US
NEXTERA ENERGY INC	65339F119	184,410	NS	$9,934,167	1.03%	EP	US
Bank of America Corp	060505682	8,100	NS	$9,904,437	1.02%	EP	US
CMS ENERGY CORP	125896BX7	8,750,000	PA	$9,794,575	1.01%	DBT	US
IONIS PHARMACEUTICALS IN	462222AG5	9,250,000	PA	$9,642,015	1.00%	DBT	US
COINBASE GLOBAL INC	19260QAJ6	11,250,000	PA	$9,510,300	0.98%	DBT	US
COREWEAVE INC	21873SAD0	7,250,000	PA	$9,438,993	0.98%	DBT	US
HALOZYME THERAPEUTICS IN	40637HAJ8	9,250,000	PA	$9,125,310	0.94%	DBT	US
LIBERTY ENERGY INC	53115LAA2	7,000,000	PA	$8,462,160	0.87%	DBT	US
MIRION TECHNOLOGIES INC	60471AAA9	7,500,000	PA	$8,461,200	0.87%	DBT	US
MICROCHIP TECHNOLOGY INC	595017BM5	7,000,000	PA	$8,010,660	0.83%	DBT	US
BARCLAYS BANK PLC	06744EDH7	7,500,000	PA	$7,758,525	0.80%	DBT	GB
FLUOR CORP	343412AJ1	5,250,000	PA	$7,055,580	0.73%	DBT	US
CENTRUS ENERGY CORP	15643UAF1	5,750,000	PA	$6,836,923	0.71%	DBT	US
AEROVIRONMENT INC	008073AA6	6,500,000	PA	$6,614,140	0.68%	DBT	US
NCL CORPORATION LTD	62886HBT7	6,250,000	PA	$6,599,625	0.68%	DBT	BM
COREWEAVE INC	21873SAH1	5,368,000	PA	$6,473,325	0.67%	DBT	US
DAVE INC	23834JAA0	4,750,000	PA	$5,889,810	0.61%	DBT	US

Showing 1–50 of 603 holdings

Key facts CIK 1171471 CUSIP 128117108 13F (30d) 54 filings 51 filers