BlackRock’s iSpecimen ISPC Stock Holding History

BlackRock’s Portfolio ISPC Stock Details ISPC Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$444	Hold	71	–	–	﹤0.01%	5576
2025 Q4	$735	Hold	71	–	–	﹤0.01%	5432
2025 Q3	$3.65K	Hold	71	–	–	﹤0.01%	5290
2025 Q2	$2.77K	Hold	71	–	–	﹤0.01%	5307
2025 Q1	$3K	Hold	71	–	–	﹤0.01%	5285
2024 Q4	$7.51K	Hold	71	–	–	﹤0.01%	5194
2024 Q3	$13.3K	Hold	71	–	–	﹤0.01%	4975
2024 Q2	$17.5K	Hold	71	–	–	﹤0.01%	5022
2024 Q1	$13.1K	Hold	71	–	–	﹤0.01%	5062
2023 Q4	$28.4K	Hold	71	–	–	﹤0.01%	5041
2023 Q3	$35.2K	Hold	71	–	–	﹤0.01%	5066
2023 Q2	$81.1K	Hold	71	–	–	﹤0.01%	4982
2023 Q1	$76K	Hold	71	–	–	﹤0.01%	5035
2022 Q4	$78K	Hold	71	–	–	﹤0.01%	5117
2022 Q3	$94K	Hold	71	–	–	﹤0.01%	5193
2022 Q2	$124K	Sell	71 -18	-20%	-$44.1K	﹤0.01%	5172
2022 Q1	$382K	Buy	89 +80	+889%	+$313K	﹤0.01%	4948
2021 Q4	$56K	Buy	9 +1	+13%	+$7.18K	﹤0.01%	5383
2021 Q3	$35K	Buy	+8	New	+$38.8K	﹤0.01%	5332

Other funds holding ISPC

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Jane Street New York $777B AUM 61.18% 1-Year Est. Return

UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return

Citadel Advisors Miami, Florida $618B AUM 30.34% 1-Year Est. Return

VFT

Vanguard Fiduciary Trust Malvern, Pennsylvania $396B AUM

StoneX Group New York $1.86B AUM 21.3% 1-Year Est. Return

TRCT

Tower Research Capital (TRC) New York $3.85B AUM 32.11% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

SBI Securities Tokyo, Japan $4.4B AUM 74.25% 1-Year Est. Return

GCP

Gill Capital Partners Denver, Colorado $348M AUM 14.74% 1-Year Est. Return

BlackRock's ISPC Position: Q1 2026 in Review

BlackRock held its iSpecimen (ISPC) position steady in Q1 2026 at 71 shares worth $444. The position accounts for ﹤0.01% of the portfolio, ranked #5576.

BlackRock first reported a position in ISPC in Q3 2021 and has held it in 19 quarters since. The position peaked at $382K in Q1 2022. 9 funds tracked by Wall St. Rank hold ISPC as of Q1 2026.

BlackRock held 71 shares of iSpecimen worth $444 as of Q1 2026.
BlackRock left its iSpecimen share count unchanged in Q1 2026.
iSpecimen made up ﹤0.01% of BlackRock's portfolio in Q1 2026, its #5576 holding.
BlackRock first reported a position in iSpecimen in Q3 2021 and has held it in 19 quarters since.
BlackRock's iSpecimen position peaked at $382K in Q1 2022.
9 funds tracked by Wall St. Rank held iSpecimen as of Q1 2026.

Based on BlackRock's 13F filing for Q1 2026, filed 13 May 2026.