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 |
Alibaba
BABA
|
$48.9M |
| 2 |
Boeing
BA
|
$25.8M |
| 3 |
SPDR Gold Trust
GLD
|
$18.2M |
| 4 |
Biogen
BIIB
|
$15.8M |
| 5 |
FedEx
FDX
|
$13.6M |
Top Sells
| 1 |
Alphabet (Google) Class C
GOOG
|
$62.1M |
| 2 |
iShares Russell 2000 ETF
IWM
|
$36.4M |
| 3 |
Industrial Select Sector SPDR Fund
XLI
|
$17.5M |
| 4 |
Netflix
NFLX
|
$16.3M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$14.6M |
Sector Composition
| 1 | Consumer Discretionary | 16.74% |
| 2 | Technology | 16.32% |
| 3 | Healthcare | 12.17% |
| 4 | Industrials | 12.14% |
| 5 | Communication Services | 7.05% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
26
Industrial Select Sector SPDR Fund
XLI
$23B
| $6.74M | 0.02% |
86,822
-225,904
| -72% | -$17.5M |
|
27
Pfizer
PFE
$141B
| $6.42M | 0.02% |
188,364
-734
| -0.4% | -$25K |
|
28
Ulta Beauty
ULTA
$23.8B
| $6.1M | 0.02% |
+24,348
| New | +$6.1M |
|
29
Broadcom
AVGO
$1.42T
| $6.06M | 0.02% |
+219,690
| New | +$6.06M |
|
30
Kraft Heinz
KHC
$31.9B
| $5.9M | 0.02% |
211,366
+208,166
| +6,505% | +$5.81M |
|
|
ALXN
31
DELISTED
Alexion Pharmaceuticals Inc
ALXN
| $5.47M | 0.02% |
55,897
+13,488
| +32% | +$1.32M |
|
32
Elevance Health
ELV
$72.4B
| $5.27M | 0.02% |
21,966
-21,759
| -50% | -$5.22M |
|
33
American Tower
AMT
$91.9B
| $5.14M | 0.01% |
+23,249
| New | +$5.14M |
|
|
34
Alphabet (Google) Class A
GOOGL
$2.79T
| $5.08M | 0.01% |
+83,280
| New | +$5.08M |
|
35
Invesco CurrencyShares Euro Currency Trust
FXE
$527M
| $4.89M | 0.01% |
47,190
+32,358
| +218% | +$3.35M |
|
36
Workday
WDAY
$62.3B
| $4.67M | 0.01% |
27,469
+9,971
| +57% | +$1.69M |
|
37
Gilead Sciences
GILD
$140B
| $4.5M | 0.01% |
70,958
+62,532
| +742% | +$3.96M |
|
38
Utilities Select Sector SPDR Fund
XLU
$20.8B
| $4.44M | 0.01% |
+68,563
| New | +$4.44M |
|
39
Dollar Tree
DLTR
$21.3B
| $4.35M | 0.01% |
+38,087
| New | +$4.35M |
|
40
Deere & Co
DE
$127B
| $4.3M | 0.01% |
25,497
+12,434
| +95% | +$2.1M |
|
41
Chipotle Mexican Grill
CMG
$56B
| $4.15M | 0.01% |
246,850
-206,000
| -45% | -$3.46M |
|
|
SPLK
42
DELISTED
Splunk Inc
SPLK
| $4.05M | 0.01% |
34,374
+26,675
| +346% | +$3.14M |
|
43
Automatic Data Processing
ADP
$121B
| $4.04M | 0.01% |
25,045
+12,075
| +93% | +$1.95M |
|
|
RTN
44
DELISTED
Raytheon Company
RTN
| $4.02M | 0.01% |
20,491
+14,382
| +235% | +$2.82M |
|
45
Expedia Group
EXPE
$26.3B
| $3.86M | 0.01% |
28,693
+28,513
| +15,841% | +$3.83M |
|
46
GE Aerospace
GE
$293B
| $3.63M | 0.01% |
81,560
-73,298
| -47% | -$3.27M |
|
47
ServiceNow
NOW
$191B
| $3.61M | 0.01% |
+14,233
| New | +$3.61M |
|
48
WEC Energy
WEC
$34.4B
| $3.44M | 0.01% |
36,180
+6,801
| +23% | +$647K |
|
49
Cardinal Health
CAH
$36B
| $3.41M | 0.01% |
72,328
+29,642
| +69% | +$1.4M |
|
50
ProShares Ultra VIX Short-Term Futures ETF
UVXY
$694M
| $3.33M | 0.01% |
256
-218
| -46% | -$2.84M |
|