艾恩伍德製藥公司
US ˙ NasdaqGS ˙ US46333X1081

SecurityIRWD / Ironwood Pharmaceuticals, Inc.
InstitutionQUANTITATIVE MASTER SERIES LLC - Master Small Cap Index Series
Latest Disclosed Ownership244,129 shares
Latest Disclosed Value $ 175,089
QUANTITATIVE MASTER SERIES LLC - Master Small Cap Index Series ownership in IRWD / Ironwood Pharmaceuticals, Inc.

On August 26, 2025 - QUANTITATIVE MASTER SERIES LLC - Master Small Cap Index Series filed a NPORT-P form disclosing ownership of 244,129 shares of Ironwood Pharmaceuticals, Inc. (US:IRWD) valued at $175,089 USD as of June 30, 2025. The entity filed a previous NPORT-P on May 28, 2025 disclosing 244,129 shares of Ironwood Pharmaceuticals, Inc.. This represents a change in shares of 0.00% during the quarter. The current value of the position is $808,067 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2025-08-26 2025-06-30 NP Ironwood Pharmaceuticals EC US46333X1081 244,129 0 0.00 175 -51.12 0.0039
2025-05-28 2025-03-31 NP Ironwood Pharmaceuticals EC US46333X1081 244,129 0 0.00 359 -66.88 0.0086
2025-02-25 2024-12-31 NP Ironwood Pharmaceuticals EC US46333X1081 244,129 -36,092 -12.88 1,081 -6.33 0.0236
2024-11-26 2024-09-30 NP Ironwood Pharmaceuticals EC US46333X1081 280,221 15,788 5.97 1,155 -33.06 0.0218
2024-08-26 2024-06-30 NP Ironwood Pharmaceuticals EC US46333X1081 264,433 17,796 7.22 1,724 -19.74 0.0351
2024-05-28 2024-03-31 NP Ironwood Pharmaceuticals EC US46333X1081 246,637 -4,120 -1.64 2,148 -25.10 0.0448
2024-02-26 2023-12-31 NP Ironwood Pharmaceuticals EC US46333X1081 250,757 15,687 6.67 2,869 26.73 0.0612
2023-11-28 2023-09-30 NP Ironwood Pharmaceuticals EC US46333X1081 235,070 -3,150 -1.32 2,264 -10.69 0.0591
2023-08-25 2023-06-30 NP Ironwood Pharmaceuticals EC US46333X1081 238,220 21,231 9.78 2,535 11.04 0.0601
2023-05-26 2023-03-31 NP Ironwood Pharmaceuticals EC US46333X1081 216,989 1,341 0.62 2,283 -14.56 0.0608
2023-02-24 2022-12-31 NP Ironwood Pharmaceuticals EC US46333X1081 215,648 1,418 0.66 2,672 20.37 0.0735
2022-11-25 2022-09-30 NP Ironwood Pharmaceuticals EC US46333X1081 214,230 3,071 1.45 2,219 -8.83 0.0636
2022-08-25 2022-06-30 NP Ironwood Pharmaceuticals EC US46333X1081 211,159 -17,303 -7.57 2,435 -15.31 0.0672
2022-05-26 2022-03-31 NP Ironwood Pharmaceuticals EC US46333X1081 228,462 6,403 2.88 2,874 11.01 0.0670
2022-02-25 2021-12-31 NP Ironwood Pharmaceuticals EC US46333X1081 222,059 0 0.00 2,589 -10.72 0.0562
2021-11-24 2021-09-30 NP Ironwood Pharmaceuticals EC US46333X1081 222,059 0 0.00 2,900 1.51 0.0639
2021-08-26 2021-06-30 NP Ironwood Pharmaceuticals EC US46333X1081 222,059 -19,173 -7.95 2,858 5.97 0.0613
2021-05-27 2021-03-31 NP Ironwood Pharmaceuticals EC US46333X1081 241,232 -4,741 -1.93 2,697 -3.75 0.0612
2021-02-25 2020-12-31 NP Ironwood Pharmaceuticals EC US46333X1081 245,973 -12,834 -4.96 2,802 20.37 0.0718
2020-11-25 2020-09-30 NP Ironwood Pharmaceuticals EC US46333X1081 258,807 -9,529 -3.55 2,328 -15.96 0.0747
2020-08-27 2020-06-30 NP Ironwood Pharmaceuticals EC US46333X1081 268,336 15,667 6.20 2,769 8.63 0.0905
2020-06-01 2020-03-31 NP Ironwood Pharmaceuticals EC US46333X1081 252,669 14,545 6.11 2,549 -19.56 0.1042
2020-02-27 2019-12-31 NP Ironwood Pharmaceuticals EC 46333X108 238,124 3,520 1.50 3,169 57.35 0.0953
2019-11-27 2019-09-30 NP Ironwood Pharmaceuticals EC US46333X1081 234,604 234,604 2,014 0.0666
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.