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 |
Goldman Sachs
GS
|
+$38.4M |
| 2 |
Micron Technology
MU
|
+$23.7M |
| 3 |
NVIDIA
NVDA
|
+$23.6M |
| 4 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$21.7M |
| 5 |
Wells Fargo
WFC
|
+$20.4M |
Top Sells
| 1 |
Citigroup
C
|
+$21.6M |
| 2 |
Apple
AAPL
|
+$17.2M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$13.3M |
| 4 |
Eli Lilly
LLY
|
+$9.69M |
| 5 |
Mastercard
MA
|
+$8.27M |
Sector Composition
| 1 | Technology | 14.2% |
| 2 | Communication Services | 13.46% |
| 3 | Consumer Discretionary | 12.76% |
| 4 | Healthcare | 12.43% |
| 5 | Financials | 10.75% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
226
TSMC
TSM
$1.39T
| $1.22M | 0.05% |
+37,084
| New | +$1.22M |
|
|
PTR
227
DELISTED
PETROCHINA COMPANY LIMITED ADS (REP 100 H SHARES)
PTR
| $1.21M | 0.05% |
16,575
+9,767
| +143% | +$715K |
|
228
BlackBerry
BB
$2.5B
| $1.21M | 0.05% |
155,760
+68,971
| +79% | +$534K |
|
|
AZPN
229
DELISTED
ASPEN TECHNOLOGY INC
AZPN
| $1.21M | 0.05% |
+20,491
| New | +$1.21M |
|
|
PE
230
DELISTED
PARSLEY ENERGY INC
PE
| $1.21M | 0.05% |
37,084
+30,372
| +453% | +$987K |
|
|
CATM
231
DELISTED
Cardtronics plc Class A Ordinary Shares (UK)
CATM
| $1.18M | 0.05% |
25,262
+15,579
| +161% | +$728K |
|
232
ManpowerGroup
MAN
$1.76B
| $1.18M | 0.05% |
11,499
+8,051
| +233% | +$825K |
|
233
Direxion Daily Junior Gold Miners Index Bear 2X Shares
JDST
$99.7M
| $1.17M | 0.05% |
79
+64
| +427% | +$950K |
|
234
Agnico Eagle Mines
AEM
$77.6B
| $1.16M | 0.05% |
+27,361
| New | +$1.16M |
|
|
AVXS
235
DELISTED
AveXis, Inc. Common Stock
AVXS
| $1.16M | 0.05% |
+15,240
| New | +$1.16M |
|
236
Kroger
KR
$43.6B
| $1.13M | 0.05% |
+38,425
| New | +$1.13M |
|
|
GRA
237
DELISTED
W.R. Grace & Co.
GRA
| $1.13M | 0.05% |
16,239
+6,318
| +64% | +$440K |
|
238
iShare MSCI Eurozone ETF
EZU
$8.05B
| $1.11M | 0.05% |
+29,536
| New | +$1.11M |
|
239
Altisource Portfolio Solutions
ASPS
$121M
| $1.11M | 0.05% |
3,759
+1,358
| +57% | +$400K |
|
240
Ametek
AME
$43.6B
| $1.1M | 0.05% |
+20,280
| New | +$1.1M |
|
241
Vanguard Small-Cap ETF
VB
$68.5B
| $1.09M | 0.05% |
+8,195
| New | +$1.09M |
|
242
Prudential Financial
PRU
$36.6B
| $1.09M | 0.05% |
10,233
+239
| +2% | +$25.5K |
|
243
Johnson Controls International
JCI
$71B
| $1.08M | 0.05% |
+25,553
| New | +$1.08M |
|
244
Cleveland-Cliffs
CLF
$5.65B
| $1.07M | 0.05% |
130,500
+125,504
| +2,512% | +$1.03M |
|
245
Wheaton Precious Metals
WPM
$47.6B
| $1.07M | 0.05% |
+51,302
| New | +$1.07M |
|
246
Yum! Brands
YUM
$40.3B
| $1.06M | 0.05% |
+16,623
| New | +$1.06M |
|
247
ConocoPhillips
COP
$117B
| $1.06M | 0.05% |
21,313
-22,113
| -51% | -$1.1M |
|
248
Simon Property Group
SPG
$58.8B
| $1.05M | 0.05% |
6,110
+3,758
| +160% | +$646K |
|
249
Under Armour Class C
UA
$2.08B
| $1.05M | 0.05% |
57,371
+55,480
| +2,934% | +$1.01M |
|
|
EMES
250
DELISTED
Emerge Energy Services LP
EMES
| $1.04M | 0.05% |
75,289
+67,697
| +892% | +$937K |
|