Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| 1 |
Microsoft
MSFT
|
+$101M |
| 2 |
NVIDIA
NVDA
|
+$66M |
| 3 |
Citigroup
C
|
+$51.8M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$42.7M |
| 5 |
SPDR Gold Trust
GLD
|
+$39.4M |
Top Sells
| 1 |
Apple
AAPL
|
+$411M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$64M |
| 3 |
Meta Platforms (Facebook)
META
|
+$39.8M |
| 4 |
iShares Core S&P 500 ETF
IVV
|
+$34.3M |
| 5 |
PayPal
PYPL
|
+$32.9M |
Sector Composition
| 1 | Technology | 17.4% |
| 2 | Financials | 12.04% |
| 3 | Consumer Discretionary | 10.17% |
| 4 | Healthcare | 8.63% |
| 5 | Industrials | 6.03% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1951
ProShares K-1 Free Crude Oil Strategy ETF
OILK
$70.4M
| $12K | ﹤0.01% |
306
-923
| -75% | -$36.2K |
|
|
PPBT
1952
Purple Biotech
PPBT
$3.64M
| $12K | ﹤0.01% |
296
+172
| +139% | +$6.97K |
|
1953
ProPhase Labs
PRPH
$17.4M
| $12K | ﹤0.01% |
1,114
-771
| -41% | -$8.31K |
|
1954
RBC Bearings
RBC
$12.1B
| $12K | ﹤0.01% |
59
+13
| +28% | +$2.64K |
|
1955
Sunstone Hotel Investors
SHO
$1.88B
| $12K | ﹤0.01% |
1,377
+1,071
| +350% | +$9.33K |
|
1956
Spire Global
SPIR
$313M
| $12K | ﹤0.01% |
1,403
-1,509
| -52% | -$12.9K |
|
1957
SpartanNash
SPTN
$896M
| $12K | ﹤0.01% |
442
-7,351
| -94% | -$200K |
|
1958
Mammoth Energy Services
TUSK
$113M
| $12K | ﹤0.01% |
3,616
-4,842
| -57% | -$16.1K |
|
1959
ProShares Ultra Russell2000
UWM
$408M
| $12K | ﹤0.01% |
433
-5,016
| -92% | -$139K |
|
1960
Xponential Fitness
XPOF
$288M
| $12K | ﹤0.01% |
+672
| New | +$12K |
|
|
AAMI
1961
Acadian Asset Management Inc.
AAMI
$1.79B
| $12K | ﹤0.01% |
+815
| New | +$12K |
|
|
GMDA
1962
DELISTED
Gamida Cell Ltd. Ordinary Shares
GMDA
| $12K | ﹤0.01% |
7,907
+2,856
| +57% | +$4.33K |
|
|
EMWP
1963
DELISTED
Eros Media World PLC
EMWP
| $12K | ﹤0.01% |
24,468
+11,548
| +89% | +$5.66K |
|
1964
a.k.a. Brands
AKA
$118M
| $11K | ﹤0.01% |
650
+622
| +2,221% | +$10.5K |
|
1965
BioCardia
BCDA
$6.79M
| $11K | ﹤0.01% |
387
+236
| +156% | +$6.71K |
|
1966
Baidu
BIDU
$46.5B
| $11K | ﹤0.01% |
100
| – | – |
|
1967
Cognex
CGNX
$7.76B
| $11K | ﹤0.01% |
+289
| New | +$11K |
|
|
CSW
1968
CSW Industrials, Inc.
CSW
$4.3B
| $11K | ﹤0.01% |
+100
| New | +$11K |
|
1969
iShares MSCI New Zealand ETF
ENZL
$74M
| $11K | ﹤0.01% |
279
+213
| +323% | +$8.4K |
|
1970
Frontline
FRO
$5.31B
| $11K | ﹤0.01% |
1,059
-51,271
| -98% | -$533K |
|
1971
Standard BioTools
LAB
$539M
| $11K | ﹤0.01% |
+10,102
| New | +$11K |
|
1972
Lazard
LAZ
$5.4B
| $11K | ﹤0.01% |
+357
| New | +$11K |
|
1973
908 Devices
MASS
$246M
| $11K | ﹤0.01% |
+726
| New | +$11K |
|
1974
Roundhill Ball Metaverse ETF
METV
$335M
| $11K | ﹤0.01% |
+1,576
| New | +$11K |
|
1975
McCormick & Company Non-Voting
MKC
$17.8B
| $11K | ﹤0.01% |
+159
| New | +$11K |
|