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 | |
|---|---|---|---|---|---|---|
1026
Hyliion Holdings
HYLN
$289M
| $241K | ﹤0.01% |
54,594
+52,529
| +2,544% | +$232K |
|
1027
Innovative Industrial Properties
IIPR
$1.59B
| $240K | ﹤0.01% |
1,171
-6,563
| -85% | -$1.35M |
|
|
STKL
1028
SunOpta
STKL
$748M
| $240K | ﹤0.01% |
47,908
+22,877
| +91% | +$115K |
|
1029
Atara Biotherapeutics
ATRA
$85M
| $239K | ﹤0.01% |
1,032
+868
| +529% | +$201K |
|
|
RADI
1030
DELISTED
Radius Global Infrastructure, Inc. Class A Common Stock
RADI
| $239K | ﹤0.01% |
16,756
-79,292
| -83% | -$1.13M |
|
|
APTX
1031
DELISTED
Aptinyx Inc. Common Stock
APTX
| $239K | ﹤0.01% |
+105,717
| New | +$239K |
|
|
MACK
1032
DELISTED
Merrimack Pharmaceuticals, Inc.
MACK
| $239K | ﹤0.01% |
+37,819
| New | +$239K |
|
|
BHR
1033
Braemar Hotels & Resorts
BHR
$205M
| $237K | ﹤0.01% |
38,384
+25,583
| +200% | +$158K |
|
|
PLG
1034
Platinum Group Metals
PLG
$191M
| $237K | ﹤0.01% |
112,473
+57,228
| +104% | +$121K |
|
|
PACW
1035
DELISTED
PacWest Bancorp
PACW
| $237K | ﹤0.01% |
5,504
-2,541
| -32% | -$109K |
|
1036
Donaldson
DCI
$9.41B
| $236K | ﹤0.01% |
4,550
+1,947
| +75% | +$101K |
|
1037
Eldorado Gold
EGO
$5.56B
| $236K | ﹤0.01% |
21,059
-5,355
| -20% | -$60K |
|
|
KC
1038
Kingsoft Cloud Holdings
KC
$4.6B
| $236K | ﹤0.01% |
39,026
+32,795
| +526% | +$198K |
|
1039
Lucid Motors
LCID
$6.19B
| $236K | ﹤0.01% |
930
+660
| +244% | +$167K |
|
1040
Pultegroup
PHM
$27.5B
| $236K | ﹤0.01% |
5,649
-25,068
| -82% | -$1.05M |
|
|
VRAY
1041
DELISTED
ViewRay, Inc.
VRAY
| $236K | ﹤0.01% |
60,279
-32,886
| -35% | -$129K |
|
1042
Humacyte
HUMA
$231M
| $235K | ﹤0.01% |
33,351
+18,148
| +119% | +$128K |
|
1043
Clearway Energy Class A
CWEN.A
$3.23B
| $233K | ﹤0.01% |
7,010
-7,236
| -51% | -$241K |
|
|
ZY
1044
DELISTED
Zymergen Inc. Common Stock
ZY
| $233K | ﹤0.01% |
80,751
+76,764
| +1,925% | +$221K |
|
1045
H&R Block
HRB
$6.88B
| $231K | ﹤0.01% |
8,892
-60,280
| -87% | -$1.57M |
|
1046
Paysafe
PSFE
$841M
| $231K | ﹤0.01% |
5,683
-11,862
| -68% | -$482K |
|
1047
Ryanair
RYAAY
$31.6B
| $231K | ﹤0.01% |
+6,643
| New | +$231K |
|
1048
W.P. Carey
WPC
$14.9B
| $231K | ﹤0.01% |
2,928
-16,820
| -85% | -$1.33M |
|
|
NS
1049
DELISTED
NuStar Energy L.P.
NS
| $231K | ﹤0.01% |
+16,069
| New | +$231K |
|
1050
monday.com
MNDY
$9.89B
| $230K | ﹤0.01% |
+1,459
| New | +$230K |
|