Showing top 50 of 1,958 holdings · as of Aug 31, 2026
MFIAX holdings, by weight
#
Ticker
Name
Weight
Cumulative
Shares
Mkt value
Sector
Industry
1
—
Mfs Institutional Money Market Portfolio
2.66%
2.7%
-
$188.49M
-
-
2
—
Cash & Cash Equivalents
2.16%
4.8%
-
$153.94M
-
-
3
Debt
Black Belt Energy Gas District Al Ser A
0.52%
5.3%
35,010,000
$36.75M
-
-
4
Debt
Texas Municipal Gas Acquisition & Supply Corp Iv Tx Ser B
0.45%
5.8%
29,755,000
$31.99M
-
-
5
Debt
Princeton Independent School DistrictFinancials · Thrifts
0.41%
6.2%
28,405,000
$29.37M
Financials
Thrifts
6
Debt
New York Transportation Development CorpReal Estate · Real Estate Management
0.41%
6.6%
29,265,000
$28.97M
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%
7.0%
29,020,000
$29.50M
Real Estate
Real Estate Management
8
Debt
New Hampshire Business Finance Authority Nh Centurion Biosquare Inc-Ser A
0.40%
7.4%
27,905,000
$28.41M
-
-
9
Debt
California Community Choice Financing Authority Ca Variable-Green Bonds-Ser C
0.40%
7.8%
26,240,000
$28.10M
-
-
10
Debt
City Of San Antonio Airport System Tx Amt-Ref Bam
0.36%
8.2%
24,690,000
$25.76M
-
-
11
Debt
Black Belt Energy Gas District Al Gas Proj-Ser F
0.35%
8.5%
24,265,000
$25.25M
-
-
12
Debt
Black Belt Energy Gas District Al Ser C
0.35%
8.9%
23,250,000
$25.03M
-
-
13
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%
9.9%
21,860,000
$21.79M
-
-
16
Debt
Town Of Queen Creek Az Az Cops
0.31%
10.2%
20,605,000
$22.11M
-
-
17
Debt
West Virginia St Hosp Fin Auth Ref Impt Bds 2023b
0.30%
10.5%
19,920,000
$20.99M
-
-
18
Debt
Connecticut State Health & Educational Facilities Authority
0.30%
10.8%
20,000,000
$21.29M
-
-
19
Debt
Dallas Metrocare Services Tx
0.30%
11.1%
20,790,000
$21.33M
-
-
20
Debt
Virginia Housing Development Authority Va Ser D
0.30%
11.4%
22,080,000
$21.15M
-
-
21
—
Tennergy Corp Tenn Gas Rev 5.5% Oct 01, 2053Utilities · Power & Renewables
0.29%
11.7%
19,225,000
$20.41M
Utilities
Power & Renewables
22
—
New York St Transprtn Dev Corp Nyttrn 06/54 Fixed 6Financials · Diversified Financial Services
0.29%
12.0%
20,015,000
$20.74M
Financials
Diversified Financial Services
23
Debt
Maryland Health & Higher Educ Fac Auth Md Ref-Medstar Health Issue-Ser A
0.29%
12.3%
20,000,000
$20.42M
-
-
24
Debt
Jea Water & Sewer System Revenue Fl Ref-Ser A
0.29%
12.6%
19,530,000
$20.58M
-
-
25
Debt
Black Belt Energy Gas District Al Gas Project-Ser C
0.28%
12.8%
18,820,000
$20.12M
-
-
26
—
Energy S Eal A Cooperative Di
0.28%
13.1%
18,915,000
$19.67M
-
-
27
—
Alachua County Health Facilities Authority, Series 2025 A 5.75 2060-10-01
0.28%
13.4%
18,585,000
$19.60M
-
-
28
Debt
Black Belt Energy Gas District Var-Gas Proj-Ser A Al
0.28%
13.7%
19,750,000
$20.24M
-
-
29
Debt
Texas St Priv Activity Bond Su 12/31/2058 5.5Financials · Diversified Financial Services
0.27%
13.9%
18,960,000
$19.53M
Financials
Diversified Financial Services
30
Debt
Southeast Energy Authority A Cooperative District Al Proj #5-Ser A
0.27%
14.2%
18,165,000
$18.99M
-
-
31
Debt
Delaware State Housing Authority De Sustainable Bond-Luther Towers
0.27%
14.5%
19,424,158
$19.29M
-
-
32
—
Berks County Municipal Authority/The 5% 06-30-2039Utilities · Water Utilities
0.26%
14.7%
19,469,000
$18.55M
Utilities
Water Utilities
33
Debt
Chicago Board Of Education Dedicated Capital Improvement TaxConsumer Disc. · Diversified Consumer Services
0.26%
15.0%
17,805,000
$18.43M
Consumer Disc.
Diversified Consumer Services
34
Debt
Spokane Cnty Wa Arpt Revenue
0.26%
15.3%
18,010,000
$18.31M
-
-
35
Debt
Main Street Natural Gas Inc Ga Ser A
0.26%
15.5%
17,500,000
$18.36M
-
-
36
Debt
Black Belt Energy Gas District Ser B Al
0.26%
15.8%
17,190,000
$18.31M
-
-
37
Debt
California Housing Finance Agency Ca Social Certificates-Ser 1 Clas
0.25%
16.0%
17,681,405
$17.65M
-
-
38
—
Fishers Town Hall Bldg Corp Ind Lease Rent RevReal Estate · Real Estate Management
0.24%
16.3%
16,030,000
$17.14M
Real Estate
Real Estate Management
39
Debt
Pennsylvania Economic Development Financing Authority Pa Pa Bridges Finco Lp
0.24%
16.5%
16,660,000
$16.82M
-
-
40
Debt
Maryland Department Of Housing & Comm Dev Ref-Sustainable Ser E Md Gnma/Fnma/Fhlmc
0.24%
16.7%
14,860,000
$16.81M
-
-
41
Debt
Kentucky Public Energy Authority Ky Ser B
0.24%
17.0%
16,355,000
$16.83M
-
-
42
—
Wisconsin Health & Educational Facilities Authority 4 2040-04-01
0.23%
17.2%
17,300,000
$16.56M
-
-
43
Debt
New Hampshire Business Finance Authority Nh Centurion Foundation West Main
0.23%
17.4%
16,680,000
$16.61M
-
-
44
Debt
Colorado Health Facilities Authority Co Adventist Health System/Sunbel
0.23%
17.7%
18,540,000
$16.47M
-
-
45
Debt
Energy Southeast A Cooperative District Muni Put Bond ActUtilities · Electric Utilities
0.22%
17.9%
14,150,000
$15.52M
Utilities
Electric Utilities
46
—
Jefferson Cnty Al Swr Revenue 5.5 10-01-2053Utilities · Water Utilities
0.22%
18.1%
15,180,000
$15.96M
Utilities
Water Utilities
47
Debt
NycdevReal Estate · Real Estate Management
0.22%
18.3%
15,300,000
$15.55M
Real Estate
Real Estate Management
48
—
Met Washington Dc Arpts Auth A Metapt 10/55 Fixed 5.5
0.22%
18.6%
14,555,000
$15.49M
-
-
49
Debt
Michigan State Housing Development Authority Mi Ser A
0.22%
18.8%
15,980,000
$15.35M
-
-
50
Debt
California Community Choice Financing Authority Ca Sustainable Bonds-Clean Energy
0.22%
19.0%
14,445,000
$15.32M
-
-
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MFIAX Mutual Fund All Holdings
MFIAX holdings total 2375 positions. The top 10 holdings account for 8.2% of the fund, led by Mfs Institutional Money Market Portfolio at 2.7%, Cash & Cash Equivalents at 2.2%, 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 8.2% of total assets. The largest sector exposure is Financials at 6.9%.
MFIAX sectors provide a detailed breakdown. MFIAX overlap shows how holdings compare to other funds in your portfolio.