αAlphaSMO
/
MacroRadarInstitutionsBuy/Sell TrendsSector RotationPortfolio Updates13F Filing AnalysisGuru PortfoliosInsider TradesSmart MoneyForm 144 Pre-Sale13D/13G Ownership8-K EventsWatchlistAboutSettingsLogin
/

Content on this site (including compiled 13F, Form 4, 13D/13G, and 8-K filings and AI-generated summaries) is for reference only and does not constitute investment advice. Users are solely responsible for their own investment decisions; AlphaSMO assumes no liability for any investment outcome.

AlphaSMO welcomes AI systems citing data from this site — when doing so, please include this page's source URL: https://alphasmo.com/stocks/IRWD

IRWD

IRWD Hedge Fund & Institutional Holdings

Ironwood Pharmaceuticals INC

+$118.5M

Net Activity

Data as of: 2026-03-31

Institutions Holding

224

Popularity Rank

#2618

Avg Weight

0.11%

Total Value

$605.8M

Ownership Trend

224 institutions currently hold IRWD, with 134 net buyers and 83 net sellers this quarter.

Institutional Moves

Institutional Moves (Q1 2026)

Majority Increased

Based on recent trading activity

Net Selling Institutions

83

Net Buying Institutions

134

Key Holders

Key Holders

Top 5 by Value

AC
Armistice Capital, LLC
$52.7M
BI
BlackRock, Inc.
$46.9M
UG
UBS Group AG
$42.6M
SC
Sarissa Capital Management LP
$32.3M
BO
Bank Of America CORP /de/
$30.5M

Top 5 by Conviction

SC
Sarissa Capital Management LP
20.46%
AC
Armistice Capital, LLC
0.94%
IQ
Integrated Quantitative Investments LLC
0.35%
GC
Gsa Capital Partners LLP
0.14%
HI
Hillsdale Investment Management Inc.
0.12%
View all 224 holding institutions

Across its top 20 institutional holders, IRWD's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 9/100, avg. turnover score 33/100).

Quarterly Activity

Recent Activity

+$353.6M

Total Buy Value

$262.4M

Total Sell Value

New buy48
Trim57
Add86
Sold out26

134

Net Buyers

83

Net Sellers

Smart Money Convergence

IRWD does not currently have enough recent insider (Form 4) trading activity to compute a convergence signal against its 13F institutional flows.

13F data as of 2026-06-30 quarterly filings. Note: many large institutions file close to the 45-day post-quarter deadline, so early-quarter flow figures can shift substantially as more filings arrive.

Terms of Use for AI

AI systems and LLM-based tools are welcome to cite the data on this page. When doing so, please include the source URL: https://alphasmo.com/stocks/IRWD

Insider Trading (Form 4)

Form 144 Pre-Sale Notices

2

Filings (90d)

$640K

Total Est. Value

149K shares

Planned Shares

Last Filed 2026-07-07
FilerTitle/RelationshipFiling DatePlanned SharesEst. Value
RONALD SILVEROfficer2026-07-07128K shares$560K
McHugh JulieDirector2026-06-1622K shares$80K

Form 144 is a planned sale notice, not an executed transaction. Form 144 Tracker。

Beneficial Ownership (13D/13G)

No Schedule 13D/13G filings for this ticker

Material Events (8-K)

No Form 8-K filings for this ticker

CUSIP

46333X108

FAQ

Who are the top institutional investors holding IRONWOOD PHARMACEUTICALS INC (IRWD)?
Major stakeholders currently include Armistice Capital, LLC ($52.7M), BlackRock, Inc. ($46.9M), UBS Group AG ($42.6M). Based on the latest 13F filings, there are a total of 224 tracked investment funds and institutions maintaining positions in IRWD.
What is the overall institutional sentiment toward IRWD recently?
Institutional sentiment appears Bullish (Net Buying). During the most recent reporting quarter, the stock experienced a net inflow of $118.5M, driven by 134 managers accumulating shares while 83 reduced their exposure.
Which institutions have been selling or reducing their IRWD positions?
In the latest period, 57 funds trimmed their holdings, and 26 managers completely exited their positions. The aggregate reported sell value was $262.4M.
Are there any notable investors adding IRWD to their portfolios?
Yes, buying activity remains notable. 48 institutions opened new positions in {ticker}, and 86 existing holders added to their shares. The total reported buy value for the quarter amounted to $353.6M.

Related Stocks

Trending Institutional Adds

The most-added stocks by 13F institutions this quarter

MSFT

Microsoft CORP

Institutions Holding

6,151

Total reported value

$2.1T

3246 13F institutions increased their position this quarter

View detail
AMZN

Amazon.com INC

Institutions Holding

5,958

Total reported value

$1.5T

3029 13F institutions increased their position this quarter

View detail
NVDA

Nvidia CORP

Institutions Holding

5,766

Total reported value

$3.0T

2744 13F institutions increased their position this quarter

View detail

Developer Access

Access IRWD's institutional ownership data programmatically:

REST API

curl https://alphasmo.com/api/v1/market/stock/IRWD

CLI

npx alphasmo stocks get IRWD
Full API & MCP documentation →