Citadel Advisors’s State Street SPDR Portfolio Mortgage Backed Bond ETF SPMB Stock Holding History

Citadel Advisors’s Portfolio SPMB Stock Details SPMB Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2025 Q3	–	Sell	-22,500	Closed	-$497K	–	14013
2025 Q2	$497K	Buy	22,500 +19,200	+582%	+$419K	﹤0.01%	8651
2025 Q1	$72.8K	Buy	+3,300	New	+$71.8K	﹤0.01%	11863
2024 Q3	–	Sell	-12,300	Closed	-$265K	–	15178
2024 Q2	$265K	Sell	12,300 -39,300	-76%	-$840K	﹤0.01%	9382
2024 Q1	$1.12M	Buy	51,600 +51,500	+51,500%	+$1.12M	﹤0.01%	6694
2023 Q4	$2.21K	Sell	100 -6,500	-98%	-$137K	﹤0.01%	13726
2023 Q3	$137K	Buy	+6,600	New	+$141K	﹤0.01%	10490

Other funds holding SPMB

Financial Engines Advisors Santa Clara, California $56.3B AUM 17.83% 1-Year Est. Return

LPL Financial San Diego, California $445B AUM 25.58% 1-Year Est. Return

Stifel Financial St. Louis, Missouri $120B AUM 27.84% 1-Year Est. Return

BEI

Benjamin Edwards Inc Clayton, Missouri $11B AUM 18.22% 1-Year Est. Return

Ameriprise Minneapolis, Minnesota $495B AUM 43.24% 1-Year Est. Return

CIM

Confluence Investment Management St. Louis, Missouri $6.4B AUM 9.79% 1-Year Est. Return

CX Institutional Auburn, Indiana $3.46B AUM 21.89% 1-Year Est. Return

Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return

Advisory Alpha Holland, Michigan $4.08B AUM 20.62% 1-Year Est. Return

AssetMark Inc Concord, California $58.2B AUM 22.78% 1-Year Est. Return

Citadel Advisors's SPMB Position: Q2 2026 in Review

Citadel Advisors opened a new position in State Street SPDR Portfolio Mortgage Backed Bond ETF (SPMB) in Q2 2026: 1,438,482 shares worth $32.1M. The stake represents ﹤0.01% of the portfolio and ranks #2017 among its holdings. This is a return to the name: Citadel Advisors previously reported a position in SPMB as recently as Q3 2025.

Citadel Advisors first reported a position in SPMB in Q4 2016 and has held it in 25 quarters since. The position peaked at $47.7M in Q4 2020. 256 funds tracked by Wall St. Rank hold SPMB as of Q2 2026.

Citadel Advisors held 1,438,482 shares of State Street SPDR Portfolio Mortgage Backed Bond ETF worth $32.1M as of Q2 2026.
State Street SPDR Portfolio Mortgage Backed Bond ETF was a new Citadel Advisors position in Q2 2026.
State Street SPDR Portfolio Mortgage Backed Bond ETF made up ﹤0.01% of Citadel Advisors's portfolio in Q2 2026, its #2017 holding.
Citadel Advisors first reported a position in State Street SPDR Portfolio Mortgage Backed Bond ETF in Q4 2016 and has held it in 25 quarters since.
Citadel Advisors's State Street SPDR Portfolio Mortgage Backed Bond ETF position peaked at $47.7M in Q4 2020.
256 funds tracked by Wall St. Rank held State Street SPDR Portfolio Mortgage Backed Bond ETF as of Q2 2026.

Based on Citadel Advisors's 13F filing for Q2 2026, filed 14 Aug 2026.