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
| Rank | Stock | Value |
|---|---|---|
| 1 |
Amazon
AMZN
|
+$102M |
| 2 |
TSMC
TSM
|
+$27.8M |
| 3 |
JPMorgan Chase
JPM
|
+$22.4M |
| 4 |
Boeing
BA
|
+$19.4M |
| 5 |
ExxonMobil
XOM
|
+$14.7M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
SPDR Gold Trust
GLD
|
+$95.5M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$79.6M |
| 3 |
Tesla
TSLA
|
+$75.3M |
| 4 |
NVIDIA
NVDA
|
+$51.6M |
| 5 |
iShares MSCI EAFE ETF
EFA
|
+$40.5M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.53% |
| 2 | Technology | 0.4% |
| 3 | Healthcare | 0.22% |
| 4 | Financials | 0.21% |
| 5 | Communication Services | 0.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
UFS
3401
DELISTED
DOMTAR CORPORATION (New)
UFS
| $357K | ﹤0.01% |
+13,622
| New | +$345K |
|
|
AGNT
3402
AGNT Inc
AGNT
$690M
| $356K | ﹤0.01% |
+17,662
| New | +$272K |
|
3403
Vertiv
VRT
$110B
| $356K | ﹤0.01% |
+20,609
| New | +$323K |
|
3404
Yeti Holdings
YETI
$3.86B
| $356K | ﹤0.01% |
+7,877
| New | +$373K |
|
|
TCO
3405
PUT
DELISTED
Taubman Centers Inc.
TCO
| $356K | ﹤0.01% |
107
-191
| -64% | -$7.12K |
|
3406
CALL
AMC Global Media
AMCX
$445M
| $355K | ﹤0.01% |
144
+49
| +52% | +$1.18K |
|
3407
CALL
Howmet Aerospace
HWM
$115B
| $355K | ﹤0.01% |
292
+173
| +145% | +$2.89K |
|
3408
PUT
Koppers
KOP
$954M
| $355K | ﹤0.01% |
170
+144
| +554% | +$3.27K |
|
3409
Prospect Capital
PSEC
$1.12B
| $355K | ﹤0.01% |
70,646
+54,784
| +345% | +$275K |
|
3410
CALL
Tenet Healthcare
THC
$21B
| $355K | ﹤0.01% |
145
-79
| -35% | -$2.02K |
|
3411
Tradeweb Markets
TW
$21.7B
| $355K | ﹤0.01% |
6,130
-13,820
| -69% | -$760K |
|
|
NETI
3412
PUT
DELISTED
Eneti Inc.
NETI
| $355K | ﹤0.01% |
251
-980
| -80% | -$13.8K |
|
3413
Edgewell Personal Care
EPC
$1.28B
| $354K | ﹤0.01% |
12,711
-8,467
| -40% | -$251K |
|
3414
GameStop
GME
$9.66B
| $354K | ﹤0.01% |
138,888
-184,728
| -57% | -$267K |
|
|
GOGL
3415
PUT
DELISTED
Golden Ocean Group
GOGL
| $354K | ﹤0.01% |
927
+242
| +35% | +$928 |
|
3416
CALL
Invesco
IVZ
$13.3B
| $354K | ﹤0.01% |
311
+14
| +5% | +$148 |
|
3417
PUT
Suncor Energy
SU
$75.6B
| $354K | ﹤0.01% |
290
-329
| -53% | -$5.15K |
|
3418
iShares US Transportation ETF
IYT
$2.32B
| $353K | ﹤0.01% |
7,108
-14,256
| -67% | -$667K |
|
3419
CALL
Snap-on
SNA
$21.1B
| $353K | ﹤0.01% |
24
+14
| +140% | +$2.03K |
|
3420
Box
BOX
$4.18B
| $352K | ﹤0.01% |
20,296
-29,945
| -60% | -$553K |
|
3421
Equity Lifestyle Properties
ELS
$12.6B
| $352K | ﹤0.01% |
+5,752
| New | +$372K |
|
3422
CALL
Pitney Bowes
PBI
$2.46B
| $352K | ﹤0.01% |
664
+221
| +50% | +$1.02K |
|
3423
IPG Photonics
IPGP
$3.81B
| $351K | ﹤0.01% |
2,066
+55
| +3% | +$9.08K |
|
3424
Nucor
NUE
$56.4B
| $351K | ﹤0.01% |
+7,839
| New | +$347K |
|
|
VCRA
3425
CALL
DELISTED
VOCERA COMMUNICATIONS, INC.
VCRA
| $351K | ﹤0.01% |
121
+120
| +12,000% | +$3.24K |
|
Similar funds
Simplex Trading's Q3 2020 Portfolio in Review
As of Q3 2020, Simplex Trading held 9,056 positions worth $73.5B, up 17% from $62.7B the previous quarter. Its ten largest holdings account for 43% of the portfolio.
Simplex Trading's Q3 2020 filing shows 1,403 new, 3,135 increased, 3,122 reduced and 1,191 closed positions. Its largest new stake was Goldman Sachs: 60,397 shares worth $12.1M. The largest sale was SPDR Gold Trust, an estimated $95.5M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.53% of assets, up from 0.47% a quarter earlier, followed by Technology and Healthcare.
- Simplex Trading's largest Q3 2020 buy was Goldman Sachs: 60,397 shares worth $12.1M.
- Simplex Trading added most to Amazon in Q3 2020, an estimated $102M increase.
- Simplex Trading's biggest Q3 2020 reduction was SPDR Gold Trust, cutting an estimated $95.5M.
- Simplex Trading fully exited iShares MSCI EAFE ETF in Q3 2020, selling an estimated $40.5M.
- Simplex Trading's ten largest holdings make up 43% of its $73.5B portfolio in Q3 2020.
- Simplex Trading opened 1,403 new positions and closed 1,191 in Q3 2020.
- Simplex Trading's portfolio value rose 17% quarter-over-quarter to $73.5B.
Based on Simplex Trading's 13F filing for Q3 2020, filed 14 Oct 2020.