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
|
$586M |
| 2 |
Strategy Inc Common Stock Class A
MSTR
|
$82.5M |
| 3 |
Intel
INTC
|
$40.4M |
| 4 |
Invesco QQQ Trust
QQQ
|
$39.4M |
| 5 |
Uber
UBER
|
$36.3M |
Top Sells
| 1 |
NVIDIA
NVDA
|
$130M |
| 2 |
Pinduoduo
PDD
|
$95.7M |
| 3 |
Boeing
BA
|
$56.2M |
| 4 |
KraneShares CSI China Internet ETF
KWEB
|
$40.7M |
| 5 |
Microsoft
MSFT
|
$40.5M |
Sector Composition
| 1 | Technology | 34.29% |
| 2 | Consumer Discretionary | 11.38% |
| 3 | Healthcare | 9.65% |
| 4 | Financials | 6.33% |
| 5 | Communication Services | 5.52% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
426
State Street
STT
$32B
| $1.06M | ﹤0.01% |
+10,835
| New | +$1.06M |
|
427
Zimmer Biomet
ZBH
$20.9B
| $1.06M | ﹤0.01% |
10,059
+5,516
| +121% | +$582K |
|
428
Camping World
CWH
$1.12B
| $1.06M | ﹤0.01% |
+50,376
| New | +$1.06M |
|
429
CONMED
CNMD
$1.7B
| $1.05M | ﹤0.01% |
15,340
+12,061
| +368% | +$825K |
|
430
New York Times
NYT
$9.6B
| $1.05M | ﹤0.01% |
+20,160
| New | +$1.05M |
|
431
Vaxcyte
PCVX
$4.29B
| $1.05M | ﹤0.01% |
12,818
+12,485
| +3,749% | +$1.02M |
|
432
Gannett
GCI
$629M
| $1.05M | ﹤0.01% |
206,821
-23,046
| -10% | -$117K |
|
433
Boston Properties
BXP
$12.2B
| $1.05M | ﹤0.01% |
14,059
-36,736
| -72% | -$2.73M |
|
434
Freshpet
FRPT
$2.7B
| $1.04M | ﹤0.01% |
7,052
-1,597
| -18% | -$236K |
|
435
Direxion Shares ETF Trust Direxion Daily AMZN Bull 2X Shares
AMZU
$299M
| $1.04M | ﹤0.01% |
+24,827
| New | +$1.04M |
|
436
Fox Class A
FOXA
$27.4B
| $1.04M | ﹤0.01% |
21,361
-12,955
| -38% | -$629K |
|
437
NetEase
NTES
$85B
| $1.04M | ﹤0.01% |
11,619
-36,191
| -76% | -$3.23M |
|
438
Omeros
OMER
$284M
| $1.03M | ﹤0.01% |
104,606
+86,462
| +477% | +$854K |
|
439
Mativ Holdings
MATV
$680M
| $1.03M | ﹤0.01% |
94,270
-79,348
| -46% | -$864K |
|
|
ALTR
440
DELISTED
Altair Engineering Inc. Class A Common Stock
ALTR
| $1.02M | ﹤0.01% |
9,381
+6,889
| +276% | +$751K |
|
441
Ingredion
INGR
$8.24B
| $1.02M | ﹤0.01% |
7,392
+5,698
| +336% | +$783K |
|
442
O'Reilly Automotive
ORLY
$89B
| $1.02M | ﹤0.01% |
+12,840
| New | +$1.02M |
|
443
Realty Income
O
$54.2B
| $1.01M | ﹤0.01% |
+18,938
| New | +$1.01M |
|
444
ProShares Ultra VIX Short-Term Futures ETF
UVXY
$665M
| $1M | ﹤0.01% |
+48,294
| New | +$1M |
|
445
CNX Resources
CNX
$4.18B
| $990K | ﹤0.01% |
27,005
+23,956
| +786% | +$878K |
|
446
Coeur Mining
CDE
$9.43B
| $988K | ﹤0.01% |
172,788
+63,476
| +58% | +$363K |
|
447
Global X Copper Miners ETF NEW
COPX
$2.13B
| $987K | ﹤0.01% |
25,872
+12,596
| +95% | +$481K |
|
448
Telephone and Data Systems
TDS
$4.54B
| $987K | ﹤0.01% |
+28,952
| New | +$987K |
|
|
KC
449
Kingsoft Cloud Holdings
KC
$3.78B
| $981K | ﹤0.01% |
+93,606
| New | +$981K |
|
450
GFL Environmental
GFL
$17.4B
| $978K | ﹤0.01% |
21,970
+20,768
| +1,728% | +$924K |
|