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 |
Financial Select Sector SPDR Fund
XLF
|
+$42.3M |
| 2 |
Shopify
SHOP
|
+$37.4M |
| 3 |
Verizon
VZ
|
+$34M |
| 4 |
iShares China Large-Cap ETF
FXI
|
+$33M |
| 5 |
Merck
MRK
|
+$28M |
Top Sells
| 1 |
AMC Entertainment Holdings
AMC
|
+$38.3M |
| 2 |
Carnival Corp
CCL
|
+$37.6M |
| 3 |
GE Aerospace
GE
|
+$33M |
| 4 |
Advanced Micro Devices
AMD
|
+$30.6M |
| 5 |
Micron Technology
MU
|
+$28.3M |
Sector Composition
| 1 | Technology | 20.53% |
| 2 | Consumer Discretionary | 13.81% |
| 3 | Healthcare | 11.39% |
| 4 | Communication Services | 7.32% |
| 5 | Industrials | 6.51% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1476
iShares Exponential Technologies ETF
XT
$3.57B
| $115K | ﹤0.01% |
1,745
-5,081
| -74% | -$335K |
|
1477
Kodiak Sciences
KOD
$489M
| $114K | ﹤0.01% |
1,345
+1,175
| +691% | +$99.6K |
|
|
SAFE
1478
DELISTED
Safehold Inc.
SAFE
| $114K | ﹤0.01% |
1,428
+1,329
| +1,342% | +$106K |
|
1479
KULR Technology Group
KULR
$185M
| $113K | ﹤0.01% |
+5,153
| New | +$113K |
|
1480
Madison Square Garden
MSGS
$5.12B
| $112K | ﹤0.01% |
647
-4,312
| -87% | -$746K |
|
1481
Stratasys
SSYS
$835M
| $112K | ﹤0.01% |
+4,608
| New | +$112K |
|
|
KLRS
1482
Kalaris Therapeutics, Inc. Common Stock
KLRS
$72.8M
| $112K | ﹤0.01% |
378
+374
| +9,350% | +$111K |
|
|
WWE
1483
DELISTED
World Wrestling Entertainment
WWE
| $112K | ﹤0.01% |
2,277
-558
| -20% | -$27.4K |
|
1484
American Vanguard Corp
AVD
$160M
| $111K | ﹤0.01% |
6,789
+6,147
| +957% | +$101K |
|
1485
Magnachip Semiconductor
MX
$112M
| $111K | ﹤0.01% |
+5,303
| New | +$111K |
|
1486
Universal Technical Institute
UTI
$1.48B
| $111K | ﹤0.01% |
14,215
-10,550
| -43% | -$82.4K |
|
|
CELL
1487
DELISTED
PhenomeX Inc. Common Stock
CELL
| $111K | ﹤0.01% |
+6,140
| New | +$111K |
|
|
LOTZ
1488
DELISTED
CarLotz, Inc. Class A Common Stock
LOTZ
| $111K | ﹤0.01% |
48,998
-52,902
| -52% | -$120K |
|
1489
Alphatec Holdings
ATEC
$2.26B
| $110K | ﹤0.01% |
+9,633
| New | +$110K |
|
1490
Camtek
CAMT
$3.98B
| $110K | ﹤0.01% |
2,392
-6,141
| -72% | -$282K |
|
1491
Humacyte
HUMA
$233M
| $110K | ﹤0.01% |
+15,203
| New | +$110K |
|
1492
Meta Platforms (Facebook)
META
$1.9T
| $110K | ﹤0.01% |
330
-300
| -48% | -$100K |
|
1493
VivoPower
VVPR
$51.7M
| $110K | ﹤0.01% |
3,635
+3,176
| +692% | +$96.1K |
|
1494
BigBear.ai
BBAI
$1.88B
| $109K | ﹤0.01% |
+19,394
| New | +$109K |
|
1495
Brighthouse Financial
BHF
$2.8B
| $109K | ﹤0.01% |
2,123
-148
| -7% | -$7.6K |
|
|
BPT
1496
DELISTED
BP Prudhoe Bay Royalty Trust
BPT
| $109K | ﹤0.01% |
27,841
+9,732
| +54% | +$38.1K |
|
1497
Invesco DB Energy Fund
DBE
$49.1M
| $109K | ﹤0.01% |
6,386
+4,423
| +225% | +$75.5K |
|
1498
Energizer
ENR
$2.02B
| $109K | ﹤0.01% |
2,719
+511
| +23% | +$20.5K |
|
1499
iShares MSCI Canada ETF
EWC
$3.26B
| $109K | ﹤0.01% |
+2,847
| New | +$109K |
|
1500
Inspire Medical Systems
INSP
$2.37B
| $109K | ﹤0.01% |
478
-363
| -43% | -$82.8K |
|