Emergent BioSolutions Inc.
DE ˙ DB ˙ US29089Q1058
6,75 € ↑0,05 (0,75%)
2026-06-04
AKTIENPREIS
SecurityDE:ER4 / Emergent BioSolutions Inc.
InstitutionRenaissance Technologies Llc
ManagerJames Simons
Latest Disclosed Ownership656,047 shares
Latest Disclosed Value $ 5,445,190
Renaissance Technologies Llc reports 13.67% increase in ownership of ER4 / Emergent BioSolutions Inc.

On May 14, 2026 - Renaissance Technologies Llc filed a 13F-HR form disclosing ownership of 656,047 shares of Emergent BioSolutions Inc. (DE:ER4) valued at $4,627,756 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 577,147 shares of Emergent BioSolutions Inc.. This represents a change in shares of 13.67% during the quarter. The current value of the position is $4,428,317 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)
2026-05-14 2026-03-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 656,047 78,900 13.67 5,445 -23.66 0.0085
2026-02-12 2025-12-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 577,147 58,900 11.37 7,134 56.08 0.0111
2025-11-13 2025-09-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 518,247 -171,400 -24.85 4,571 3.89 0.0060
2025-08-13 2025-06-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 689,647 -70,600 -9.29 4,400 19.09 0.0059
2025-05-14 2025-03-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 760,247 94,400 14.18 3,695 -41.96 0.0056
2025-02-13 2024-12-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 665,847 140,900 26.84 6,365 45.22 0.0094
2024-11-13 2024-09-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 524,947 351,200 202.13 4,383 270.19 0.0066
2024-08-09 2024-06-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 173,747 -717,553 -80.51 1,185 59,100.00 0.0020
2024-05-13 2024-03-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 891,300 344,000 62.85 2 100.00 0.0035
2024-02-13 2023-12-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 547,300 547,300 1 0.0020
2023-05-12 2023-03-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 0 -304,000 -100.00 0 -100.00
2023-02-13 2022-12-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 304,000 248,900 451.72 4 -99.74 0.0049
2022-11-14 2022-09-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 55,100 -39,900 -42.00 1,157 -60.77 0.0016
2022-08-12 2022-06-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 95,000 -263,000 -73.46 2,949 -79.94 0.0035
2022-05-13 2022-03-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 358,000 358,000 14,699 0.0172
2021-05-13 2021-03-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 0 -62,100 -100.00 0 -100.00
2021-02-10 2020-12-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 62,100 17,996 40.80 5,564 22.10 0.0060
2020-11-13 2020-09-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 44,104 -340,520 -88.53 4,557 -85.02 0.0046
2020-08-13 2020-06-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 384,624 -238,377 -38.26 30,416 -15.62 0.0263
2020-05-14 2020-03-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 623,001 -141,100 -18.47 36,047 -12.56 0.0350
2020-02-13 2019-12-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 764,101 -220,210 -22.37 41,223 -19.89 0.0317
2019-11-13 2019-09-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 984,311 -366,200 -27.12 51,460 -21.13 0.0436
2019-08-12 2019-06-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 1,350,511 -627,891 -31.74 65,243 -34.72 0.0574
2019-05-14 2019-03-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 1,978,402 382,391 23.96 99,949 5.64 0.0909
2019-02-12 2018-12-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 1,596,011 -275,300 -14.71 94,612 -23.20 0.1036
2018-11-13 2018-09-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 1,871,311 -195,200 -9.45 123,188 18.07 0.1266
2018-08-13 2018-06-30 13F/A-1 EMERGENT BIOSOLUTIONS COM 29089Q105 2,066,511 198,600 10.63 104,338 6.09 0.1137
2018-08-13 2018-06-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 1,867,911 98,346
2018-05-14 2018-03-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 1,867,911 283,000 17.86 98,346 33.53 0.1076
2018-02-13 2017-12-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 1,584,911 432,300 37.51 73,651 57.97 0.0812
2017-11-13 2017-09-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 1,152,611 332,200 40.49 46,623 67.59 0.0549
2017-08-11 2017-06-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 820,411 117,700 16.75 27,820 36.33 0.0355
2017-05-12 2017-03-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 702,711 -180,800 -20.46 20,407 -29.67 0.0285
2017-02-13 2016-12-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 883,511 -294,600 -25.01 29,015 -21.89 0.0459
2016-11-14 2016-09-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 1,178,111 -96,100 -7.54 37,146 3.67 0.0657
2016-08-12 2016-06-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 1,274,211 161,400 14.50 35,831 -11.42 0.0682
2016-05-13 2016-03-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 1,112,811 161,200 16.94 40,451 6.24 0.0769
2016-02-11 2015-12-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 951,611 177,400 22.91 38,074 72.62 0.0830
2015-11-12 2015-09-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 774,211 102,700 15.29 22,057 -0.31 0.0526
2015-08-14 2015-06-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 671,511 84,700 14.43 22,126 31.10 0.0504
2015-05-13 2015-03-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 586,811 75,700 14.81 16,877 21.26 0.0359
2015-02-13 2014-12-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 511,111 -28,300 -5.25 13,918 21.08 0.0336
2014-11-12 2014-09-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 539,411 -68,100 -11.21 11,495 -15.76 0.0315
2014-08-13 2014-06-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 607,511 -155,387 -20.37 13,645 -29.22 0.0318
2014-05-14 2014-03-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 762,898 199,287 35.36 19,278 48.78 0.0462
2014-02-14 2013-12-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 563,611 -33,900 -5.67 12,957 13.83 0.0310
2013-11-13 2013-09-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 597,511 -126,300 -17.45 11,383 9.06 0.0276
2013-08-12 2013-06-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 723,811 723,811 10,437 0.0274
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.