MFBBX Mutual Fund

NAV$11.73

AUM$121,348.01

TER1.50%

Holdings433

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MFBBX Mutual Fund

NAV$11.73

MFS Corporate Bond Fund Class B

AUM$121,348.01

TER1.50%

Holdings433

See how much of MFBBX you already own

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Overview Performance Chart Dividends Top Holdings All Holdings Sectors Geography Similar Compare Overlap

Showing top 50 of 432 holdings · as of Jul 31, 2026

MFBBX holdings, by weight
#	Ticker	Name	Weight	Cumulative	Shares	Mkt value	Sector	Industry
1	—	Mfs Institutional Money Market Portfolio	1.91%	1.9%	-	$82.93M	-	-
2	—	Cash & Cash Equivalents	1.26%	3.2%	-	$55.20M	-	-
3	—	Boeing Co 5.805%, Due 05/01/2050Industrials · Aerospace & Defense	0.77%	3.9%	34,963,000	$33.53M	Industrials	Aerospace & Defense
4	—	JPMorgan Chase & Co Frb Nov 08 32	0.76%	4.7%	37,249,000	$32.96M	-	-
5	Debt	Ubs Group Ag 144AFinancials · Banks	0.75%	5.5%	34,161,000	$32.83M	Financials	Banks
6	PNFP	Pinnacle Financial Partners Inc Frb May 19 32	0.63%	6.1%	27,356,000	$27.43M	-	-
7	Debt	Charles Schwab Corp Sr Unsecured 11/36 Var	0.58%	6.7%	26,195,000	$25.30M	-	-
8	—	Morgan Stanley Frb Jan 30 37	0.57%	7.2%	25,841,000	$24.80M	-	-
9	Debt	Sumitomo Mitsui Financial Group Inc	0.57%	7.8%	28,730,000	$24.94M	-	-
10	—	Caixabank Sa 144A Frb Sep 13 34	0.54%	8.3%	21,476,000	$23.61M	-	-
11	Debt	Royal Bank Of Canada	0.52%	8.9%	22,645,000	$22.53M	-	-
12	—	Aib Group Plc 144A Frb Sep 13 29	0.51%	9.4%	21,135,000	$22.40M	-	-
13	Debt	American Homes 4 Rent Lp	0.51%	9.9%	22,341,000	$22.29M	-	-
14	—	Ubs Group Ag 144A 5.58% May 09, 2036Financials · Banks	0.50%	10.4%	21,675,000	$21.86M	Financials	Banks
15	Debt	Spire Inc	0.50%	10.9%	21,871,000	$21.78M	-	-
16	—	JPMorgan Chase & Co Frb Oct 22 35	0.48%	11.4%	21,473,000	$21.09M	-	-
17	Debt	Bacardi Ltd 144A	0.48%	11.8%	21,190,000	$20.98M	-	-
18	—	Element Fleet Management Corp. 6.319 12-04-2028Financials · Diversified Financial Services	0.46%	12.3%	19,070,000	$19.87M	Financials	Diversified Financial Services
19	Debt	Mars IncCons. Staples · Food Products	0.45%	12.8%	19,255,000	$19.60M	Cons. Staples	Food Products
20	Debt	National Australia Bank Ltd Mtn 144A 3.35% Jan 12, 2037Financials · Banks	0.45%	13.2%	21,704,000	$19.50M	Financials	Banks
21	—	Paychex Inc 5.35% Apr 15, 2032Industrials · Professional Services	0.45%	13.6%	19,325,000	$19.67M	Industrials	Professional Services
22	Debt	Highwoods Realty Lp Sr Unsecured 01/33 5.35 5.35% 20330115	0.45%	14.1%	20,086,000	$19.74M	-	-
23	Debt	Jane Street Group 144A	0.45%	14.5%	19,354,000	$19.55M	-	-
24	Debt	Bank Hapoalim Bm	0.45%	15.0%	20,030,000	$19.72M	-	-
25	Debt	Scih Salt Holdings Inc 144A	0.44%	15.4%	18,888,000	$19.12M	-	-
26	Debt	Maxam Prill Sarl 144A	0.44%	15.9%	18,665,000	$19.34M	-	-
27	—	Equitable America Global Funding 144A 5.136/15/2031	0.44%	16.3%	19,093,000	$19.09M	-	-
28	Debt	Flutter Treasury Dac Sr Secured 144A 06/31 5.875Consumer Disc. · Hotels & Leisure	0.43%	16.7%	18,564,000	$18.61M	Consumer Disc.	Hotels & Leisure
29	—	Transdigm Inccorp. NoteIndustrials · Aerospace & Defense	0.43%	17.2%	18,212,000	$18.83M	Industrials	Aerospace & Defense
30	Debt	Hilton Domestic Operating Company 144A	0.43%	17.6%	18,633,000	$18.69M	-	-
31	Debt	Sunoco Lp 144A	0.42%	18.0%	17,578,000	$18.28M	-	-
32	Debt	Icon Investments Six Dac	0.42%	18.4%	17,938,000	$18.31M	-	-
33	—	Boston Gas Co.Utilities · Gas Utilities	0.41%	18.9%	17,644,000	$17.94M	Utilities	Gas Utilities
34	Debt	Northern Star Resources Ltd 144A	0.41%	19.3%	17,231,000	$17.90M	-	-
35	—	Mitsubishi Ufj Financial Group Inc 5.19% Sep 12, 2036	0.41%	19.7%	17,847,000	$17.72M	-	-
36	Debt	Citadel Securities Global Holdings Llc 144A	0.41%	20.1%	17,888,000	$17.77M	-	-
37	—	Amazon.com, Inc. 5.65%	0.40%	20.5%	18,459,000	$17.67M	-	-
38	Debt	Store Capital CorpReal Estate · Equity Real Estate Investment Trusts (REITs)	0.39%	20.9%	19,607,000	$17.18M	Real Estate	Equity Real Estate Investment Trusts (REITs)
39	—	JPMorgan Chase & Co Frb Jul 23 41 2041-07-23	0.39%	21.3%	17,317,000	$17.16M	-	-
40	Debt	Nordea Bank Abp 144A	0.39%	21.7%	16,788,000	$16.81M	-	-
41	Debt	Targa Resources Corp	0.39%	22.1%	20,769,000	$17.19M	-	-
42	Debt	Eastern Energy Gas Holdings Llc	0.39%	22.4%	18,259,000	$16.95M	-	-
43	Debt	Blue Owl Credit Income Corp 144A	0.39%	22.8%	17,122,000	$17.06M	-	-
44	—	Ardn 2025-Arcp Mortgage Trust 6.09194 06/15/2035Financials · Mortgage Real Estate Investment Trusts (REITs)	0.38%	23.2%	16,374,000	$16.43M	Financials	Mortgage Real Estate Investment Trusts (REITs)
45	—	Jersey Central Power & Light Co 144A 2.750000% 03/01/2032 Callable 12/01/2031 At 100.0000Utilities · Electric Utilities	0.38%	23.6%	18,451,000	$16.46M	Utilities	Electric Utilities
46	Debt	Ferguson Enterprises Inc	0.38%	24.0%	16,803,000	$16.59M	-	-
47	Debt	Lpl Holdings Inc	0.37%	24.3%	16,252,000	$16.20M	-	-
48	Debt	Cbre Services Inc	0.37%	24.7%	15,472,000	$16.25M	-	-
49	Debt	Lpl Holdings Inc 144A	0.37%	25.1%	16,854,000	$16.19M	-	-
50	Debt	Wsp Global Inc 144A	0.37%	25.5%	16,273,000	$16.03M	-	-
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MFBBX Mutual Fund All Holdings

MFBBX holdings total 433 positions. The top 10 holdings account for 8.3% of the fund, led by Mfs Institutional Money Market Portfolio at 1.9%, Cash & Cash Equivalents at 1.3%, Boeing Co 5.805%, Due 05/01/2050 at 0.8%.

MFBBX portfolio concentration is well-diversified, with the top 10 representing 8.3% of total assets. The largest sector exposure is Financials at 12.7%.

MFBBX sectors provide a detailed breakdown. MFBBX overlap shows how holdings compare to other funds in your portfolio.