Showing top 50 of 2,006 holdings · as of Jul 31, 2026
MFIAX holdings, by weight
#
Ticker
Name
Weight
Cumulative
Shares
Mkt value
Sector
Industry
1
—
Mfs Institutional Money Market Portfolio
2.74%
2.7%
-
$193.43M
-
-
2
—
Cash & Cash Equivalents
2.25%
5.0%
-
$159.72M
-
-
3
Debt
Black Belt Energy Gas District Al Ser A
0.52%
5.5%
35,010,000
$36.48M
-
-
4
Debt
Texas Municipal Gas Acquisition & Supply Corp Iv Tx Ser B
0.45%
6.0%
29,755,000
$31.84M
-
-
5
Debt
Princeton Independent School DistrictFinancials · Thrifts
0.43%
6.4%
28,405,000
$30.25M
Financials
Thrifts
6
Debt
New York Transportation Development CorpReal Estate · Real Estate Management
0.41%
6.8%
29,265,000
$29.21M
Real Estate
Real Estate Management
7
Debt
New York Transportation Development Corporation, New York, Special Facility Revenue Bonds, John F Kennedy International Airport New Terminal 1 ProjectReal Estate · Real Estate Management
0.41%
7.2%
29,020,000
$29.34M
Real Estate
Real Estate Management
8
Debt
New Hampshire Business Finance Authority Nh Centurion Biosquare Inc-Ser A
0.40%
7.6%
27,905,000
$28.54M
-
-
9
Debt
California Community Choice Financing Authority Ca Variable-Green Bonds-Ser C
0.39%
8.0%
26,240,000
$27.96M
-
-
10
Debt
New Hampshire Business Finance Authority Nh Winston Salem Sustainable Ener
Pennsylvania Economic Dev Financing Authority Pa Amt-The Penndot Major Bridges Agm
0.31%
10.3%
21,860,000
$21.93M
-
-
17
Debt
West Virginia St Hosp Fin Auth Ref Impt Bds 2023b
0.30%
10.6%
19,920,000
$21.03M
-
-
18
Debt
Maryland Health & Higher Educ Fac Auth Md Ref-Medstar Health Issue-Ser A
0.30%
10.9%
20,000,000
$20.97M
-
-
19
Debt
Connecticut State Health & Educational Facilities Authority
0.30%
11.2%
20,000,000
$21.48M
-
-
20
Debt
Dallas Metrocare Services Tx
0.30%
11.5%
20,790,000
$21.38M
-
-
21
—
New York St Transprtn Dev Corp Nyttrn 06/54 Fixed 6Financials · Diversified Financial Services
0.29%
11.8%
20,015,000
$20.75M
Financials
Diversified Financial Services
22
—
Tennergy Corp Tenn Gas Rev 5.5% Oct 01, 2053Utilities · Power & Renewables
0.29%
12.1%
19,225,000
$20.43M
Utilities
Power & Renewables
23
Debt
Jea Water & Sewer System Revenue Fl Ref-Ser A
0.29%
12.4%
19,530,000
$20.75M
-
-
24
Debt
Texas St Priv Activity Bond Su 12/31/2058 5.5Financials · Diversified Financial Services
0.28%
12.7%
18,960,000
$19.50M
Financials
Diversified Financial Services
25
Debt
Black Belt Energy Gas District Var-Gas Proj-Ser A Al
0.28%
12.9%
19,750,000
$20.17M
-
-
26
—
Alachua County Health Facilities Authority, Series 2025 A 5.75 2060-10-01
0.28%
13.2%
18,585,000
$19.63M
-
-
27
Debt
Black Belt Energy Gas District Al Gas Project-Ser C
0.28%
13.5%
18,820,000
$19.90M
-
-
28
—
Energy S Eal A Cooperative Di
0.28%
13.8%
18,915,000
$19.47M
-
-
29
Debt
Delaware State Housing Authority De Sustainable Bond-Luther Towers
0.28%
14.1%
19,424,158
$19.49M
-
-
30
Debt
Southeast Energy Authority A Cooperative District Al Proj #5-Ser A
0.27%
14.3%
18,165,000
$18.98M
-
-
31
Debt
Chicago Board Of Education Dedicated Capital Improvement TaxConsumer Disc. · Diversified Consumer Services
0.26%
14.6%
17,805,000
$18.36M
Consumer Disc.
Diversified Consumer Services
32
—
Berks County Municipal Authority/The 5% 06-30-2039Utilities · Water Utilities
0.26%
14.8%
19,469,000
$18.48M
Utilities
Water Utilities
33
Debt
Black Belt Energy Gas District Ser B Al
0.26%
15.1%
17,190,000
$18.16M
-
-
34
Debt
San Antonio 5.5% 07/56
0.26%
15.4%
17,750,000
$18.55M
-
-
35
Debt
Spokane Cnty Wa Arpt Revenue
0.26%
15.6%
18,010,000
$18.35M
-
-
36
Debt
Main Street Natural Gas Inc Ga Ser A
0.26%
15.9%
17,500,000
$18.24M
-
-
37
Debt
California Housing Finance Agency Ca Social Certificates-Ser 1 Clas
0.25%
16.1%
17,700,866
$17.69M
-
-
38
—
Fishers Town Hall Bldg Corp Ind Lease Rent RevReal Estate · Real Estate Management
0.24%
16.4%
16,030,000
$17.19M
Real Estate
Real Estate Management
39
Debt
Pennsylvania Economic Development Financing Authority Pa Pa Bridges Finco Lp
0.24%
16.6%
16,660,000
$16.73M
-
-
40
Debt
Maryland Department Of Housing & Comm Dev Ref-Sustainable Ser E Md Gnma/Fnma/Fhlmc
0.24%
16.9%
15,400,000
$17.33M
-
-
41
Debt
Kentucky Public Energy Authority Ky Ser B
0.24%
17.1%
16,355,000
$16.74M
-
-
42
—
Jefferson Cnty Al Swr Revenue 5.5 10-01-2053Utilities · Water Utilities
0.23%
17.3%
15,180,000
$16.05M
Utilities
Water Utilities
43
Debt
Colorado Health Facilities Authority Co Adventist Health System/Sunbel
0.23%
17.6%
18,540,000
$16.51M
-
-
44
Debt
Orange County Health Facilities Authority Fl Orlando Health Obligated Group
0.23%
17.8%
15,410,000
$16.02M
-
-
45
—
Wisconsin Health & Educational Facilities Authority 4 2040-04-01
0.23%
18.0%
17,300,000
$16.56M
-
-
46
Debt
New Hampshire Business Finance Authority Nh Centurion Foundation West Main
0.23%
18.2%
16,680,000
$16.59M
-
-
47
Debt
Energy Southeast A Cooperative District Muni Put Bond ActUtilities · Electric Utilities
0.22%
18.5%
14,150,000
$15.56M
Utilities
Electric Utilities
48
Debt
NycdevReal Estate · Real Estate Management
0.22%
18.7%
15,300,000
$15.48M
Real Estate
Real Estate Management
49
Debt
San Antonio Water System Tx Junior Lien-Ser B
0.22%
18.9%
15,000,000
$15.85M
-
-
50
—
Indust Development Auth Of The City Of Phoenix/The Az Amt-Variable-Ref-Republic Services Vrb Dec 01 35
0.22%
19.1%
15,300,000
$15.41M
-
-
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MFIAX Mutual Fund All Holdings
MFIAX holdings total 2292 positions. The top 10 holdings account for 8.3% of the fund, led by Mfs Institutional Money Market Portfolio at 2.7%, Cash & Cash Equivalents at 2.3%, Black Belt Energy Gas District Al Ser A 5.000 Dec 01 34 at 0.5%.
MFIAX portfolio concentration is well-diversified, with the top 10 representing 8.3% of total assets. The largest sector exposure is Financials at 7.1%.
MFIAX sectors provide a detailed breakdown. MFIAX overlap shows how holdings compare to other funds in your portfolio.