HUBBX
HARTFORD ULTRASHORT BOND HLS FUND
HARTFORD SERIES FUND INC
Expense ratio1
0.70%
Net assets2
$481.70M
Holdings2
308
Category
Other
2025 return3
4.30%

Investment objective & strategy

As of April 10, 2025 · prospectus

Objective. The Fund seeks total return and income consistent with preserving capital and maintaining liquidity.

Strategy. The Fund seeks to achieve its investment objective by investing in securities that the sub-adviser, Wellington Management Company LLP (Wellington Management), considers to be attractive giving consideration to both yield and total return. Under normal circumstances, the Fund invests at least 80% of its assets in fixed income securities. The Fund normally invests in investment grade securities. Fixed income securities in which the Fund may invest include, but are not limited to, (1) securities issued or guaranteed as to principal or interest by the U.S. Government, its agencies or instrumentalities; (2) non-convertible and convertible debt securities issued or guaranteed by U.S. corporations or other issuers (including foreign issuers); (3) asset-backed and mortgage-related securities, including collateralized mortgage obligations; (4) securities and … The Fund seeks to achieve its investment objective by investing in securities that the sub-adviser, Wellington Management Company LLP (Wellington Management), considers to be attractive giving consideration to both yield and total return. Under normal circumstances, the Fund invests at least 80% of its assets in fixed income securities. The Fund normally invests in investment grade securities. Fixed income securities in which the Fund may invest include, but are not limited to, (1) securities issued or guaranteed as to principal or interest by the U.S. Government, its agencies or instrumentalities; (2) non-convertible and convertible debt securities issued or guaranteed by U.S. corporations or other issuers (including foreign issuers); (3) asset-backed and mortgage-related securities, including collateralized mortgage obligations; (4) securities and loans issued or guaranteed as to principal or interest by a foreign issuer, including supranational entities such as development banks, non-U.S. corporations, banks or bank holding companies, or other foreign issuers; (5) commercial mortgage-backed securities; (6) zero coupon securities; and (7) fixed-income related derivatives. The Fund normally will maintain a dollar weighted average duration of less than 1.5 years. The Fund will generally invest in securities that have an effective duration of less than 5 years at the time of purchase. Duration is a measure of the sensitivity of a fixed income securitys price to changes in interest rates. The Funds average duration measure incorporates a bonds yield, coupon, final maturity, and the effect of derivatives, including interest rate swaps and futures contracts that may be used to manage the Funds interest rate risk. The Fund may also use repurchase agreements to achieve its investment objective. The Fund may invest in Rule 144A securities, which are privately placed, restricted securities that may only be resold under certain circumstances to other qualified institutional buyers.

Top holdings

As of March 31, 2026 · N-PORT
SecurityTickerValue% of fund
US TREASURY N/B $34.75M 7.21%
US TREASURY N/B $27.36M 5.68%
U.S. Treasury Bills B $9.67M 2.01%
Government National Mortgage Association $6.26M 1.30%
US TREASURY N/B $5.85M 1.21%
Federal Home Loan Bank $5.00M 1.04%
Freddie Mac Strips $4.89M 1.02%
US TREASURY N/B $4.89M 1.01%
US TREASURY N/B $4.81M 1.00%
CAPITAL ONE PRIME AUTO RECEIVABLES TRUST 2025-1 COPAR 2025-1 A2A 14043YAB $4.68M 0.97%
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Allocation by sector

As of March 31, 2026 · N-PORT
View portfolio breakdown →

Portfolio moves

Dec 31, 2025 → Mar 31, 2026
Opened
59
Exited
50
Increased
1
Decreased
141
Unchanged
107

How many positions this fund opened, exited, grew, trimmed, or left unchanged between its two most recent N-PORT snapshots — net changes between point-in-time reports, not a trade log.

View portfolio moves →

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Advisers

As of December 31, 2025 · N-CEN
FirmRole
Wellington Management Company LLP Sub-adviser
Hartford Funds Management Company, LLC Adviser

Footnotes

  1. Expense ratio as of April 10, 2025, from the fund's prospectus.
  2. Net assets and holdings count as of March 31, 2026, from the fund's N-PORT filing.
  3. Total return for calendar year 2025, before tax and after fund expenses. Computed by compounding the twelve monthly total returns the fund reported in its SEC N-PORT filings for 2025 (the latest prospectus does not yet chart this year).

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