SI-BONE, Inc.

SIBN • NASDAQ

SI-BONE, Inc. is a medical - devices company in the healthcare sector on NASDAQ, led by Laura A. Francis, with a market cap of $806.6M. As of Q3 2025, 97% of shares are held by 173 institutional investors, with BlackRock, Inc. as the largest holder at 8.01%.

Chief Executive OfficerLaura A. Francis

Market Cap$806.6M

Medical - Devices

Healthcare

Employees344.0

Websitesi-bone.com

Country

United States of America

Overview

Overview of institutional ownership in SIBN as of Q3 2025 with a market cap of $635.0M

All Institutions

Institutions: 173
Value Held: $616.1M
Shares Held: 41.9M
Avg Position: $3.6M
Median Position: $432.1K

Hedge Funds

Hedge Funds: 35
Value Held: $140.5M
Shares Held: 9.5M
Avg Position: $4.0M
Median Position: $1.4M

Ownership Breakdown

Institutional (non-HF)

74.89%

$475.6M

Hedge Funds

22.13%

$140.5M

Retail & Other

2.98%

$18.9M

Based on market cap of $635.0M as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.

Biggest Investors

Institutions with the largest positions in SIBN as of Q3 2025

Institution	Key People	Position Value	Ownership	Owned Since	Total AUM (Long)
B BlackRock, Inc. Institution	-	$50.9M 0.00% of portfolio	8.01% 3.5M shares	Q4 2018 Held for 6y 11m	$5.67T
A AMERICAN CENTURY COMPANIES INC Institution	-	$41.8M 0.02% of portfolio	6.58% 2.8M shares	Q4 2023 Held for 1y 11m	$195.93B
B BROWN ADVISORY INC RIA/Wealth	David Alan Miller Founder	$40.8M 0.06% of portfolio	6.43% 2.8M shares	Q1 2021 Held for 4y 8m	$74.0B
ORBIMED ADVISORS LLC Hedge Fund•Sector	Sam Block Iii CFO	$38.0M 0.92% of portfolio	5.98% 2.6M shares	Q4 2018 Held for 6y 11m	$4.1B
VANGUARD GROUP INC Institution	Salim Ramji CEO	$36.7M 0.00% of portfolio	5.77% 2.5M shares	Q4 2018 Held for 6y 11m	$6.69T
C Champlain Investment Partners, LLC Long Only Manager	Judith Wilkinson O'Connell CEO	$31.0M 0.23% of portfolio	4.89% 2.1M shares	Q4 2021 Held for 3y 11m	$13.3B
First Light Asset Management, LLC Hedge Fund•Sector	Mathew Paul Arens CEO	$28.2M 2.66% of portfolio	4.45% 1.9M shares	Q2 2019 Held for 6y 5m	$1.1B
SILVERCREST ASSET MANAGEMENT GROUP LLC RIA/Wealth	Richard Ralston Hough CEO	$21.5M 0.14% of portfolio	3.39% 1.5M shares	Q3 2019 Held for 6y 2m	$15.1B
N Nuveen, LLC Institution	-	$19.9M 0.01% of portfolio	3.14% 1.4M shares	Q1 2025 Held for 8 months	$377.89B
GRANAHAN INVESTMENT MANAGEMENT INC/MA Long Only Manager	Jane Moran White CEO	$15.3M 0.63% of portfolio	2.41% 1.0M shares	Q4 2020 Held for 4y 11m	$2.4B

Net Capital Flow

Institutional buying and selling activity for SIBN in Q3 2025

Traded: +$11.0M
Buyers: 84
Sellers: 84
Total Bought: +$74.3M
Total Sold: −$63.3M
Avg Position: $3.1M

Biggest Buyers

Institution	Net Bought	Current Position
CADIAN CAPITAL MANAGEMENT, LLC Hedge Fund•Long/Short	+$8.8M +595.0K shares	$8.8M 595.0K shares
Point72 Ltd RIA/Wealth	+$8.6M +581.7K shares	$8.6M 584.6K shares
A AMERICAN CENTURY COMPANIES INC Institution	+$7.7M +521.7K shares	$41.8M 2.8M shares
WELLINGTON MANAGEMENT CO LLP Long Only Manager	+$5.4M +364.9K shares	$12.6M 853.3K shares
I Impax Asset Management Group plc Long Only Manager	+$4.9M +333.2K shares	$15.1M 1.0M shares
Point72 Asset Management, L.P. Hedge Fund•Multi-Strategy	+$3.7M +251.1K shares	$7.4M 502.0K shares
A Assenagon Asset Management S.A. Institution	+$3.3M +224.0K shares	$3.3M 224.0K shares
ALGERT COLDIRON INVESTORS LLC Hedge Fund•Quant	+$3.1M +212.2K shares	$6.1M 415.2K shares
J JANE STREET GROUP, LLC Institution	+$3.1M +210.4K shares	$5.0M 340.6K shares
First Light Asset Management, LLC Hedge Fund•Sector	+$2.5M +166.9K shares	$28.2M 1.9M shares

Biggest Sellers

Institution	Net Sold	Current Position
Holocene Advisors, LP Hedge Fund•Long/Short	−$11.0M −585.3K shares	Sold Off 0 shares
HARBOR CAPITAL ADVISORS, INC. ETF Provider	−$6.2M −423.7K shares	$2.2M 150.0K shares
Marshall Wace LLP Institution	−$3.6M −243.9K shares	$2.8M 192.3K shares
B Bellevue Group AG Institution	−$3.6M −241.3K shares	$4.4M 298.9K shares
NEXT CENTURY GROWTH INVESTORS LLC Long Only Manager	−$3.4M −233.0K shares	$343.6K 23.3K shares
GRANAHAN INVESTMENT MANAGEMENT INC/MA Long Only Manager	−$3.3M −224.7K shares	$15.3M 1.0M shares
B BROWN ADVISORY INC RIA/Wealth	−$2.1M −139.8K shares	$40.8M 2.8M shares
BALYASNY ASSET MANAGEMENT LLC Hedge Fund•Multi-Strategy	−$2.0M −104.8K shares	Sold Off 0 shares
MILLENNIUM MANAGEMENT LLC Hedge Fund•Multi-Strategy	−$1.9M −131.2K shares	$3.0M 206.6K shares
UBS Group AG Institution	−$1.6M −107.8K shares	$230.0K 15.6K shares

Entry and Exit Activity

Institutions that initiated new positions or completely exited SIBN in Q3 2025

New Positions: 8
New Value: $9.8M
Exited Positions: 21
Exited Value: $17.8M

New Positions

Institution	Position Value
CADIAN CAPITAL MANAGEMENT, LLC Hedge Fund•Long/Short	$8.8M 595.0K shares
P PharVision Advisers, LLC Hedge Fund•Long/Short	$431.3K 29.3K shares
Quantinno Capital Management LP Hedge Fund•Market Neutral	$219.7K 14.9K shares
I INCEPTIONR LLC Hedge Fund•Quant	$161.4K 11.0K shares
BOOTHBAY FUND MANAGEMENT, LLC Fund of Funds	$151.1K 10.3K shares
S State of Alaska, Department of Revenue Institution	$39.6K 2.7K shares
MATHER GROUP, INC. RIA/Wealth	$6.3K 430.0 shares
O Optiver Holding B.V. Institution	$5.1K 348.0 shares

Exited Positions

Institution	Previous Position
Holocene Advisors, LP Hedge Fund•Long/Short	$11.0M 585.3K shares
BALYASNY ASSET MANAGEMENT LLC Hedge Fund•Multi-Strategy	$2.0M 104.8K shares
AMERIPRISE FINANCIAL INC Institution	$977.2K 51.9K shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$912.6K 48.5K shares
Quantbot Technologies LLC Hedge Fund•Quant	$637.3K 33.9K shares
Centiva Capital, LP Hedge Fund•Multi-Strategy	$382.1K 20.3K shares
Integrated Quantitative Investments LLC Long Only Manager	$363.2K 19.3K shares
OCCUDO QUANTITATIVE STRATEGIES LP Hedge Fund•Market Neutral	$315.6K 16.8K shares
A AXQ CAPITAL, LP Hedge Fund•Market Neutral	$289.6K 15.4K shares
Mount Yale Investment Advisors, LLC RIA/Wealth	$279.2K 14.8K shares

Options Activity

Institutions with the largest Call and Put options positions in SIBN as of Q3 2025

Call Positions: 2
Call Value: $842.0K
Put Positions: 0
Put Value: -

Call Positions

Institution	Position Value
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$694.8K 472.0 contracts
J JANE STREET GROUP, LLC Institution	$147.2K 100.0 contracts

Put Positions

Institution	Position Value
No put positions found

Most Committed Institutions

Institutions with SIBN as the highest % of their portfolio as of Q3 2025

Institution	Key People	Portfolio Weight	Ownership	Owned Since	Total AUM (Long)
First Light Asset Management, LLC Hedge Fund•Sector	Mathew Paul Arens CEO	2.66% $28.2M	4.45% 1.9M shares	Q2 2019 Held for 6y 5m	$1.1B
K Kent Lake PR LLC Hedge Fund•Long/Short	Benjamin Natter Managing Partner	1.88% $3.7M	0.58% 250.0K shares	Q3 2024 Held for 1y 2m	$195.5M
Pier Capital, LLC Long Only Manager	Jan Eric Parsons Chairman	1.12% $7.2M	1.13% 488.8K shares	Q4 2022 Held for 2y 11m	$639.8M
ORBIMED ADVISORS LLC Hedge Fund•Sector	Sam Block Iii CFO	0.92% $38.0M	5.98% 2.6M shares	Q4 2018 Held for 6y 11m	$4.1B
Bullseye Asset Management LLC Hedge Fund•Long/Short	Jakob Vincent Holm Member	0.82% $1.6M	0.25% 105.9K shares	Q3 2023 Held for 2y 2m	$191.0M
GRANAHAN INVESTMENT MANAGEMENT INC/MA Long Only Manager	Jane Moran White CEO	0.63% $15.3M	2.41% 1.0M shares	Q4 2020 Held for 4y 11m	$2.4B
Parkman Healthcare Partners LLC Hedge Fund•Long/Short	Gregory Arthur Martinez CIO	0.61% $5.6M	0.88% 378.6K shares	Q2 2023 Held for 2y 5m	$910.1M
VELA Investment Management, LLC Long Only Manager	Roderick Hadley Dillon CEO	0.60% $2.1M	0.33% 141.2K shares	Q4 2021 Held for 3y 11m	$347.1M
Point72 Ltd RIA/Wealth	Andrew David Lindner Managing Partner	0.60% $8.6M	1.36% 584.6K shares	Q2 2025 Held for 5 months	$1.4B
CADIAN CAPITAL MANAGEMENT, LLC Hedge Fund•Long/Short	Conor O'Brien CFO	0.52% $8.8M	1.38% 595.0K shares	Q3 2025 Held for 2 months	$1.7B

Hedge Fund Spotlight

Discover hedge funds investing in SIBN

CITADEL ADVISORS LLC

Hedge Fund • Multi-Strategy

Portfolio ManagerKenneth Cordele Griffin

Portfolio Value: $122.08B
Positions: 5,531
Last Reported: Q3 2025

Sector Allocation

Position in SI-BONE, Inc.

Market Value: $5.2M
Shares Held: 354.2K
Portfolio Weight: 0.00%
Owned Since: 2019-Q2

Top Holding	Sector	Market Value	Weight
1 Microsoft MSFT	Software - Infrastructure Technology	$2.1B	1.68%
2 Nvidia NVDA	Semiconductors Technology	$1.8B	1.50%
3 Meta Platforms, Inc. META	Internet Content & Information Communication Services	$1.4B	1.18%