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 | |
|---|---|---|---|---|---|---|
2351
CALL
Cedar Fair
FUN
$1.78B
| $895K | ﹤0.01% |
319
+10
| +3% | +$277 |
|
2352
PUT
Natera
NTRA
$37.5B
| $895K | ﹤0.01% |
124
+118
| +1,967% | +$6.71K |
|
2353
PUT
Regions Financial
RF
$26.3B
| $894K | ﹤0.01% |
776
-431
| -36% | -$4.81K |
|
2354
ProShares VIX Mid-Term Futures ETF
VIXM
$40M
| $893K | ﹤0.01% |
+21,975
| New | +$876K |
|
2355
PUT
The RealReal
REAL
$1.34B
| $891K | ﹤0.01% |
616
+47
| +8% | +$718 |
|
2356
PUT
Acuity Brands
AYI
$9.88B
| $890K | ﹤0.01% |
87
+37
| +74% | +$3.8K |
|
|
JKS
2357
PUT
JinkoSolar
JKS
$775M
| $890K | ﹤0.01% |
224
-14
| -6% | -$321 |
|
2358
PUT
Zumiez
ZUMZ
$320M
| $890K | ﹤0.01% |
320
+249
| +351% | +$6.51K |
|
2359
PUT
BWX Technologies
BWXT
$16B
| $889K | ﹤0.01% |
158
+131
| +485% | +$7.35K |
|
|
SGMO
2360
CALL
DELISTED
SANGAMO THERAPEUTICS INC
SGMO
| $889K | ﹤0.01% |
941
-765
| -45% | -$8.27K |
|
2361
CALL
Matador Resources
MTDR
$6.31B
| $887K | ﹤0.01% |
1,074
+589
| +121% | +$5.27K |
|
2362
CALL
Trex
TREX
$4.51B
| $887K | ﹤0.01% |
124
-122
| -50% | -$8.44K |
|
2363
PUT
Vanguard Total International Stock ETF
VXUS
$153B
| $886K | ﹤0.01% |
170
+164
| +2,733% | +$8.6K |
|
|
API
2364
Agora
API
$326M
| $885K | ﹤0.01% |
+20,614
| New | +$959K |
|
2365
PUT
NiSource
NI
$22.4B
| $884K | ﹤0.01% |
402
+339
| +538% | +$7.87K |
|
2366
NXP Semiconductors
NXPI
$68B
| $884K | ﹤0.01% |
+7,088
| New | +$865K |
|
2367
PUT
IPG Photonics
IPGP
$3.89B
| $883K | ﹤0.01% |
52
-14
| -21% | -$2.31K |
|
2368
CALL
Smith & Wesson
SWBI
$655M
| $883K | ﹤0.01% |
1,427
-136
| -9% | -$2.4K |
|
|
TGNA
2369
DELISTED
TEGNA Inc
TGNA
| $883K | ﹤0.01% |
75,164
+31,621
| +73% | +$376K |
|
2370
CALL
Winnebago Industries
WGO
$870M
| $883K | ﹤0.01% |
171
-185
| -52% | -$10.7K |
|
2371
Sempra
SRE
$60.8B
| $881K | ﹤0.01% |
14,888
-1,946
| -12% | -$120K |
|
2372
PUT
BCE
BCE
$19.9B
| $879K | ﹤0.01% |
212
-26
| -11% | -$1.1K |
|
2373
PUT
HF Sinclair
DINO
$15.9B
| $879K | ﹤0.01% |
446
-361
| -45% | -$8.99K |
|
|
TRTN
2374
CALL
DELISTED
Triton International Limited
TRTN
| $878K | ﹤0.01% |
216
+104
| +93% | +$3.56K |
|
2375
PUT
Quanta Services
PWR
$93.9B
| $877K | ﹤0.01% |
166
+67
| +68% | +$3.12K |
|
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.