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 |
Alphabet (Google) Class C
GOOG
|
+$54.6M |
| 2 |
iShares Russell 2000 ETF
IWM
|
+$52.5M |
| 3 |
SPDR S&P 500 ETF Trust
SPY
|
+$40.9M |
| 4 |
Apple
AAPL
|
+$16.5M |
| 5 |
Visa
V
|
+$12M |
Top Sells
| 1 |
Amazon
AMZN
|
+$98.7M |
| 2 |
Meta Platforms (Facebook)
META
|
+$70.7M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$33.4M |
| 4 |
Goldman Sachs
GS
|
+$30.2M |
| 5 |
Boeing
BA
|
+$26.5M |
Sector Composition
| 1 | Communication Services | 14.71% |
| 2 | Consumer Discretionary | 14.32% |
| 3 | Technology | 11.86% |
| 4 | Financials | 7.38% |
| 5 | Industrials | 6.44% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1401
Pfizer
PFE
$136B
| $13K | ﹤0.01% |
316
-122,756
| -100% | -$5.05M |
|
1402
Rockwell Medical
RMTI
$55.8M
| $13K | ﹤0.01% |
556
+420
| +309% | +$9.82K |
|
1403
Regal Rexnord
RRX
$9.22B
| $13K | ﹤0.01% |
+187
| New | +$13K |
|
1404
SK Telecom
SKM
$8.36B
| $13K | ﹤0.01% |
296
+246
| +492% | +$10.8K |
|
|
TGI
1405
DELISTED
Triumph Group
TGI
| $13K | ﹤0.01% |
1,203
-11,185
| -90% | -$121K |
|
1406
Travelzoo
TZOO
$105M
| $13K | ﹤0.01% |
+1,391
| New | +$13K |
|
1407
Verint Systems
VRNT
$1.23B
| $13K | ﹤0.01% |
+618
| New | +$13K |
|
|
SEI
1408
Solaris Energy Infrastructure, Inc.
SEI
$1.39B
| $13K | ﹤0.01% |
1,153
-12,010
| -91% | -$135K |
|
|
MGI
1409
DELISTED
MoneyGram International, Inc. New
MGI
| $13K | ﹤0.01% |
+6,675
| New | +$13K |
|
|
RNET
1410
DELISTED
RigNet, Inc.
RNET
| $13K | ﹤0.01% |
+1,058
| New | +$13K |
|
|
VSM
1411
DELISTED
Versum Materials, Inc.
VSM
| $13K | ﹤0.01% |
+487
| New | +$13K |
|
1412
Ardmore Shipping
ASC
$505M
| $12K | ﹤0.01% |
+2,706
| New | +$12K |
|
1413
Big 5 Sporting Goods
BGFV
$32.8M
| $12K | ﹤0.01% |
5,003
-5,056
| -50% | -$12.1K |
|
1414
Chefs' Warehouse
CHEF
$2.7B
| $12K | ﹤0.01% |
382
-29,965
| -99% | -$941K |
|
1415
Clarus
CLAR
$147M
| $12K | ﹤0.01% |
+1,251
| New | +$12K |
|
1416
CSX Corp
CSX
$60.5B
| $12K | ﹤0.01% |
+600
| New | +$12K |
|
1417
EnerSys
ENS
$4B
| $12K | ﹤0.01% |
165
-247
| -60% | -$18K |
|
1418
FirstCash
FCFS
$6.49B
| $12K | ﹤0.01% |
168
+130
| +342% | +$9.29K |
|
1419
Hudson Technologies
HDSN
$444M
| $12K | ﹤0.01% |
13,840
+12,896
| +1,366% | +$11.2K |
|
1420
Direxion Daily Junior Gold Miners Index Bull 2X Shares
JNUG
$516M
| $12K | ﹤0.01% |
27
-1,084
| -98% | -$482K |
|
1421
New Mountain Finance
NMFC
$1.11B
| $12K | ﹤0.01% |
979
-13,756
| -93% | -$169K |
|
1422
PennantPark Floating Rate Capital
PFLT
$1.01B
| $12K | ﹤0.01% |
+1,086
| New | +$12K |
|
1423
Rambus
RMBS
$9.26B
| $12K | ﹤0.01% |
+1,646
| New | +$12K |
|
1424
Wendy's
WEN
$1.84B
| $12K | ﹤0.01% |
784
-120
| -13% | -$1.84K |
|
|
CORR
1425
DELISTED
CorEnergy Infrastructure Trust, Inc.
CORR
| $12K | ﹤0.01% |
369
+238
| +182% | +$7.74K |
|