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MFSB · NYSE · ETF

MFS Active Core Plus Bond ETF (MFSB) Price, Holdings & Fees

$493.21+1.67%+$8.12End-of-day price as of Oct 9, 2026

MFS Active Core Plus Bond ETF (MFSB) closed at $493.21 on Oct 9, 2026, up 1.67% from the previous close of $485.09.

Share price, past year

1Y +25.12%

52-week range $377.42 – $493.21. Daily closing prices.
Monthly closing prices
Last closing price of each month
DateClose
Oct 9, 2026$493.21
Sep 30, 2026$479.16
Aug 31, 2026$441.14
Jul 31, 2026$433.32
Jun 30, 2026$427.18
May 29, 2026$439.69
Apr 30, 2026$442.66
Mar 31, 2026$414.96
Feb 27, 2026$410.22
Jan 30, 2026$396.84
Dec 31, 2025$398.84
Nov 28, 2025$418.24
Oct 31, 2025$407.11

Key statistics

Expense ratio
0.34%
as of Feb 28, 2026
Net assets
$423.8M
as of May 31, 2026
Holdings
411
as of May 31, 2026
52-week range
$377.42 – $493.21

MFS Active Core Plus Bond ETF's expense ratio is 0.34%: $34.00 a year on $10,000 invested.

Holdings

MFS Active Core Plus Bond ETF held 411 investments worth $423.77M as of May 31, 2026. Its largest holding was United States Treasury, at 7.75% of the fund.

MFS Active Core Plus Bond ETF largest holdings by share of net assets
#Holding% of fundValue
1United States Treasury7.75%$32.82M
2United States Treasury3.84%$16.29M
3United States Treasury3.49%$14.79M
4United States Treasury3.22%$13.66M
5State Street Global Advisors2.82%$11.95M
6United States Treasury1.23%$5.23M
7United States Treasury1.19%$5.04M
8United States Treasury1.18%$5.00M
9UMBS, TBA0.78%$3.32M
10United States Treasury0.72%$3.06M
11New Residential Mortgage Loan Trust0.65%$2.76M
12UMBS, TBA0.63%$2.69M
13BOSTON PROPERTIES LP0.61%$2.58M
14HIGHWOODS REALTY LP0.59%$2.51M
15Starwood Commercial Mortgage Trust0.59%$2.50M
16Elmwood CLO VIII Ltd0.59%$2.50M
17Bain Capital Credit CLO, Limited0.59%$2.50M
18LoanCore 2018-CRE1 Issuer, Ltd.0.59%$2.49M
19MF10.58%$2.45M
20BX Trust0.56%$2.39M
21MORGAN STANLEY0.56%$2.38M
22BOEING CO/THE0.55%$2.34M
23TRITON CONTAINER/TAL INT0.55%$2.33M
24JEFFERIES FIN GROUP INC0.55%$2.33M
25Onslow Bay Financial LLC0.55%$2.31M

Top 25 of 411 holdings, as of May 31, 2026. Percentages are of the fund's net assets.

What the fund owns

MFS Active Core Plus Bond ETF holdings by asset type
Asset type% of fund
Bonds and other debt65.82%
Collateralized debt obligations15.77%
Mortgage-backed securities15.29%
Cash and short-term investments2.82%
Other asset-backed securities2.21%
Interest rate derivatives0.02%
MFS Active Core Plus Bond ETF holdings by country, largest 10
Country% of fund
United States79.36%
Cayman Islands8.77%
Canada1.64%
Japan1.64%
Australia1.52%
United Kingdom1.25%
Jersey1.21%
Netherlands1.06%
Bermuda0.58%
Switzerland0.57%

Shares of net assets from the fund's N-PORT report. Funds that borrow can add up to more than 100%, with borrowing (such as repurchase agreements) shown as a negative share.

Monthly total returns

Over the 3 months to May 31, 2026, MFS Active Core Plus Bond ETF's total return was −1.00%, as reported to the SEC.

MFS Active Core Plus Bond ETF monthly total returns
MonthTotal return
May 31, 2026+0.43%
Apr 30, 2026+0.49%
Mar 31, 2026−1.90%

The fund's own total returns as reported to the SEC (N-PORT), including reinvested distributions. Not the sample prices above.

Fund profile

Name
MFS Active Core Plus Bond ETF
Ticker
MFSB
Exchange
NYSE
Fund type
ETF
Trust
MFS Active Exchange Traded Funds Trust
SEC series ID
S000085666
SEC CIK
0002018846
Fractional shares
No

Recent SEC filings

Shareholder reports and prospectuses are filed by MFS Active Exchange Traded Funds Trust, the trust behind MFS Active Core Plus Bond ETF, and cover all of its funds.

Frequently asked questions

What is MFSB's price?

MFS Active Core Plus Bond ETF (MFSB) closed at $493.21 on Oct 9, 2026, up 1.67% from the previous close of $485.09.

What is MFSB's expense ratio?

MFS Active Core Plus Bond ETF's expense ratio is 0.34%: $34.00 a year on $10,000 invested.

What does MFSB hold?

MFS Active Core Plus Bond ETF held 411 investments worth $423.77M as of May 31, 2026. Its largest holding was United States Treasury, at 7.75% of the fund. Its five largest holdings were United States Treasury, United States Treasury, United States Treasury, United States Treasury, State Street Global Advisors.

How has MFSB performed?

Over the 3 months to May 31, 2026, MFS Active Core Plus Bond ETF's total return was −1.00%, as reported to the SEC.

Sources and methodology

Holdings, net assets and monthly returns come from the fund's N-PORT filing with the SEC, as of May 31, 2026 (filed Jul 27, 2026). The expense ratio is from the fund's prospectus or shareholder report, as of Feb 28, 2026. Prices are generated sample data for development. Data sources and disclosures