Thermo Fisher Scientific Inc.
CL ˙ SNSE ˙ US8835561023
SecurityCL:TMOCL / Thermo Fisher Scientific Inc.
InstitutionPrelude Capital Management, Llc
Latest Disclosed Ownership836 shares
Latest Disclosed Value $ 410,919
Prelude Capital Management, Llc ownership in TMOCL / Thermo Fisher Scientific Inc.

On May 15, 2026 - Prelude Capital Management, Llc filed a 13F-HR form disclosing ownership of 836 shares of Thermo Fisher Scientific Inc. (CL:TMOCL) valued at $410,919 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 1,658 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of -49.58% during the quarter.

Prelude Capital Management, Llc has a history of taking positions in derivatives of the underlying security (TMOCL) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD and put options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

CL:TMOCL / Thermo Fisher Scientific Inc. Historical Put/Call Ratio
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)
2026-05-15 2026-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 836 -822 -49.58 411 -57.29 0.0314
2026-02-17 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,658 1,102 198.20 961 256.88 0.0707
2025-11-14 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 556 -2 -0.36 270 19.03 0.0210
2025-08-14 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 558 558 226 0.0220
2025-02-14 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 0 -349 -100.00 0 -100.00
2024-11-14 2024-09-30 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 349 -306 -46.72 216 -40.61 0.0131
2024-11-14 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 349 -306 216 0.0081
2024-08-14 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 655 129 24.52 362 18.69 0.0251
2024-05-15 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 526 526 306 0.0160
2024-02-14 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 0 -3,856 -100.00 0 -100.00
2023-11-14 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 3,856 1,390 56.37 1,952 51.71 0.1272
2023-08-14 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 2,466 2,034 470.83 1,287 418.55 0.0838
2023-06-01 2023-03-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 432 -39 -8.28 249 -4.25 0.0149
2023-05-15 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 432 -39 249 0.0081
2023-02-14 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 471 -707 -60.02 259 -56.62 0.0135
2022-11-14 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,178 233 24.66 597 16.37 0.0214
2022-08-24 2022-06-30 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 945 -3,047 -76.33 513 -78.24 0.0146
2022-08-15 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 945 -3,047 513 0.0146
2022-05-16 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 3,992 3,992 2,358 0.0677
2022-02-14 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 0 -2,058 -100.00 0 -100.00
2021-11-15 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 2,058 699 51.43 1,176 71.43 0.0301
2021-08-16 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,359 1,359 686 0.0204
2021-02-16 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 0 -479 -100.00 0 -100.00
2020-11-16 2020-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 479 479 211 0.0102
2019-11-14 2019-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 0 -303 -100.00 0 -100.00
2019-08-14 2019-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 303 303 89 0.0044
2019-05-15 2019-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 0 -4,307 -100.00 0 -100.00
2019-02-14 2018-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 4,307 4,307 964 0.0646
2017-02-14 2016-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 0 -3,107 -100.00 0 -100.00
2016-11-14 2016-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 3,107 -214 -6.44 494 0.61 0.0518
2016-08-15 2016-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 3,321 257 8.39 491 13.13 0.0687
2016-05-16 2016-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 3,064 -2,678 -46.64 434 -46.75 0.0606
2016-02-16 2015-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 5,742 3,178 123.95 815 159.55 0.1263
2015-11-16 2015-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 2,564 -4,848 -65.41 314 -67.36 0.0456
2015-08-14 2015-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 7,412 1,404 23.37 962 19.21 0.1346
2015-05-15 2015-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 6,008 698 13.15 807 21.35 0.1118
2015-02-13 2014-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 5,310 1,440 37.21 665 41.19 0.0974
2014-11-14 2014-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 3,870 0 0.00 471 3.06 0.0663
2014-08-14 2014-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 3,870 1,300 50.58 457 47.90 0.0605
2014-05-15 2014-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 2,570 1,870 267.14 309 296.15 0.0414
2014-02-14 2013-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 700 700 -72.76 78 -74.76 0.0129
2013-11-14 2013-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 0 -600 -100.00 0 -100.00
2013-08-14 2013-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 600 200 50.00 51 64.52 0.0109
2013-05-22 2013-03-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 400 400 31 0.0058
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2016-08-15 2016-06-30 13F THERMO FISHER SCIENTIFIC COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2016-05-16 2016-03-31 13F THERMO FISHER SCIENTIFIC COM Call 5,900 835 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2021-08-16 2021-06-30 13F THERMO FISHER SCIENTIFIC COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2021-05-17 2021-03-31 13F THERMO FISHER SCIENTIFIC COM Put 700 319 n/a n/a n/a
2019-08-14 2019-06-30 13F THERMO FISHER SCIENTIFIC COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2019-05-15 2019-03-31 13F THERMO FISHER SCIENTIFIC COM Put 15,000 0.00 4,106 22.31 n/a n/a n/a
2019-02-14 2018-12-31 13F THERMO FISHER SCIENTIFIC COM Put 15,000 3,357 n/a n/a n/a
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.