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 |
Apple
AAPL
|
+$186M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$86.2M |
| 3 |
SPDR S&P 500 ETF Trust
SPY
|
+$56.8M |
| 4 |
iShares Silver Trust
SLV
|
+$42.9M |
| 5 |
Advanced Micro Devices
AMD
|
+$36.5M |
Top Sells
| 1 |
Occidental Petroleum
OXY
|
+$44.4M |
| 2 |
Financial Select Sector SPDR Fund
XLF
|
+$42.8M |
| 3 |
Verizon
VZ
|
+$40.8M |
| 4 |
Direxion Daily S&P 500 Bull 3x Shares
SPXL
|
+$33.6M |
| 5 |
iShares China Large-Cap ETF
FXI
|
+$33M |
Sector Composition
| 1 | Technology | 23.31% |
| 2 | Consumer Discretionary | 13.02% |
| 3 | Industrials | 8.23% |
| 4 | Healthcare | 7.47% |
| 5 | Financials | 6.38% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1051
NMI Holdings
NMIH
$3.13B
| $230K | ﹤0.01% |
11,161
+5,327
| +91% | +$110K |
|
1052
Vanguard Extended Market ETF
VXF
$24.4B
| $230K | ﹤0.01% |
+1,391
| New | +$230K |
|
|
SA
1053
Seabridge Gold
SA
$1.85B
| $229K | ﹤0.01% |
12,425
+10,697
| +619% | +$197K |
|
1054
Crown Castle
CCI
$41.2B
| $228K | ﹤0.01% |
+1,239
| New | +$228K |
|
1055
Fusion Fuel Green
HTOO
$7.44M
| $228K | ﹤0.01% |
752
+330
| +78% | +$100K |
|
1056
The RealReal
REAL
$1.08B
| $228K | ﹤0.01% |
31,473
-59,571
| -65% | -$432K |
|
1057
Schneider National
SNDR
$4.29B
| $228K | ﹤0.01% |
8,976
-13,820
| -61% | -$351K |
|
|
AMRN
1058
Amarin Corp
AMRN
$306M
| $227K | ﹤0.01% |
3,451
-5,753
| -63% | -$378K |
|
|
SPPI
1059
DELISTED
Spectrum Pharmaceuticals Inc
SPPI
| $227K | ﹤0.01% |
176,178
-40,759
| -19% | -$52.5K |
|
|
AMPS
1060
DELISTED
Altus Power, Inc.
AMPS
| $226K | ﹤0.01% |
+30,516
| New | +$226K |
|
1061
QuinStreet
QNST
$929M
| $225K | ﹤0.01% |
19,424
+13,491
| +227% | +$156K |
|
|
CSII
1062
DELISTED
Cardiovascular Systems, Inc.
CSII
| $225K | ﹤0.01% |
9,971
+7,002
| +236% | +$158K |
|
1063
Cassava Sciences
SAVA
$103M
| $224K | ﹤0.01% |
6,041
+5,789
| +2,297% | +$215K |
|
1064
STAAR Surgical
STAA
$1.39B
| $224K | ﹤0.01% |
2,806
+1,483
| +112% | +$118K |
|
1065
W.R. Berkley
WRB
$27.8B
| $224K | ﹤0.01% |
+5,064
| New | +$224K |
|
|
LGF.A
1066
DELISTED
Lions Gate Entertainment Corp. Class A Voting Shares
LGF.A
| $224K | ﹤0.01% |
13,840
-34,015
| -71% | -$551K |
|
|
NIB
1067
DELISTED
iPath Bloomberg Cocoa Subindex Total Return ETN due June 24, 2038
NIB
| $224K | ﹤0.01% |
7,509
+5,007
| +200% | +$149K |
|
1068
Navigator Holdings
NVGS
$1.1B
| $223K | ﹤0.01% |
+18,271
| New | +$223K |
|
|
ESTE
1069
DELISTED
Earthstone Energy Inc. Class A Common Stock
ESTE
| $223K | ﹤0.01% |
17,684
+11,469
| +185% | +$145K |
|
1070
iShares Global Timber & Forestry ETF
WOOD
$250M
| $222K | ﹤0.01% |
+2,496
| New | +$222K |
|
1071
Clean Harbors
CLH
$12.8B
| $220K | ﹤0.01% |
+1,979
| New | +$220K |
|
|
DOMA
1072
DELISTED
Doma Holdings, Inc.
DOMA
| $220K | ﹤0.01% |
4,059
+3,333
| +459% | +$181K |
|
1073
Arqit Quantum
ARQQ
$463M
| $219K | ﹤0.01% |
564
-1,230
| -69% | -$478K |
|
1074
iShares US Energy ETF
IYE
$1.16B
| $219K | ﹤0.01% |
5,364
+5,192
| +3,019% | +$212K |
|
|
SMAR
1075
DELISTED
Smartsheet Inc.
SMAR
| $218K | ﹤0.01% |
+3,992
| New | +$218K |
|