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 |
Microsoft
MSFT
|
+$101M |
| 2 |
NVIDIA
NVDA
|
+$66M |
| 3 |
Citigroup
C
|
+$51.8M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$42.7M |
| 5 |
SPDR Gold Trust
GLD
|
+$39.4M |
Top Sells
| 1 |
Apple
AAPL
|
+$411M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$64M |
| 3 |
Meta Platforms (Facebook)
META
|
+$39.8M |
| 4 |
iShares Core S&P 500 ETF
IVV
|
+$34.3M |
| 5 |
PayPal
PYPL
|
+$32.9M |
Sector Composition
| 1 | Technology | 17.4% |
| 2 | Financials | 12.04% |
| 3 | Consumer Discretionary | 10.17% |
| 4 | Healthcare | 8.63% |
| 5 | Industrials | 6.03% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
876
Global X Cybersecurity ETF
BUG
$1.14B
| $215K | ﹤0.01% |
+8,973
| New | +$215K |
|
877
Zymeworks
ZYME
$1.15B
| $215K | ﹤0.01% |
35,070
-17,288
| -33% | -$106K |
|
|
AVTA
878
DELISTED
Avantax, Inc. Common Stock
AVTA
| $215K | ﹤0.01% |
11,163
-29,105
| -72% | -$561K |
|
879
Fifth Third Bancorp
FITB
$30.1B
| $214K | ﹤0.01% |
+6,708
| New | +$214K |
|
880
Hanesbrands
HBI
$2.21B
| $214K | ﹤0.01% |
+30,764
| New | +$214K |
|
881
Ocular Therapeutix
OCUL
$2.27B
| $213K | ﹤0.01% |
51,385
+30,108
| +142% | +$125K |
|
|
VLD
882
DELISTED
Velo3D, Inc.
VLD
| $213K | ﹤0.01% |
1,547
+1,145
| +285% | +$158K |
|
|
IMGN
883
DELISTED
Immunogen Inc
IMGN
| $213K | ﹤0.01% |
44,604
-30,772
| -41% | -$147K |
|
884
iShares MSCI USA Momentum Factor ETF
MTUM
$18.9B
| $212K | ﹤0.01% |
1,620
-667
| -29% | -$87.3K |
|
885
Murphy Oil
MUR
$3.72B
| $212K | ﹤0.01% |
6,044
-9,216
| -60% | -$323K |
|
|
FL
886
DELISTED
Foot Locker
FL
| $211K | ﹤0.01% |
6,804
-16,224
| -70% | -$503K |
|
887
Light & Wonder
LNW
$7.42B
| $211K | ﹤0.01% |
4,921
-4,710
| -49% | -$202K |
|
|
QVCGA
888
QVC Group, Inc. Series A Common Stock
QVCGA
$83.7M
| $211K | ﹤0.01% |
2,107
+1,725
| +452% | +$173K |
|
889
iShares MSCI Singapore ETF
EWS
$822M
| $209K | ﹤0.01% |
12,241
-1,339
| -10% | -$22.9K |
|
890
Precigen
PGEN
$1.23B
| $208K | ﹤0.01% |
98,262
+41,484
| +73% | +$87.8K |
|
891
Sportsman's Warehouse
SPWH
$112M
| $208K | ﹤0.01% |
+25,064
| New | +$208K |
|
|
TRVG
892
trivago
TRVG
$230M
| $208K | ﹤0.01% |
35,940
+1,045
| +3% | +$6.05K |
|
893
Establishment Labs
ESTA
$1.1B
| $207K | ﹤0.01% |
3,796
+395
| +12% | +$21.5K |
|
894
Global X S&P 500 Covered Call ETF
XYLD
$3.11B
| $207K | ﹤0.01% |
5,455
-1,772
| -25% | -$67.2K |
|
895
AerSale
ASLE
$396M
| $206K | ﹤0.01% |
11,115
+4,788
| +76% | +$88.7K |
|
896
Health Catalyst
HCAT
$229M
| $205K | ﹤0.01% |
+21,206
| New | +$205K |
|
897
HubSpot
HUBS
$25.8B
| $205K | ﹤0.01% |
762
-1,271
| -63% | -$342K |
|
898
Janus International
JBI
$1.4B
| $204K | ﹤0.01% |
+22,910
| New | +$204K |
|
899
Fulgent Genetics
FLGT
$667M
| $203K | ﹤0.01% |
+5,336
| New | +$203K |
|
900
Smith & Nephew
SNN
$16.5B
| $203K | ﹤0.01% |
+8,785
| New | +$203K |
|