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 | |
|---|---|---|---|---|---|---|
|
ONT
2651
CALL
Onterris Inc
ONT
$710M
| $688K | ﹤0.01% |
+289
| New | +$7.34K |
|
2652
PUT
Madison Square Garden
MSGS
$9.54B
| $687K | ﹤0.01% |
150
+73
| +95% | +$11.5K |
|
|
SF
2653
CALL
Stifel
SF
$12.3B
| $687K | ﹤0.01% |
306
-286
| -48% | -$6.39K |
|
|
AVYA
2654
PUT
DELISTED
Avaya Holdings Corp. Common Stock
AVYA
| $687K | ﹤0.01% |
452
-267
| -37% | -$3.77K |
|
2655
CALL
Karyopharm Therapeutics
KPTI
$168M
| $686K | ﹤0.01% |
31
+13
| +72% | +$3.18K |
|
2656
PUT
PTC
PTC
$13.7B
| $686K | ﹤0.01% |
83
| – | – |
|
2657
CALL
Tronox
TROX
$995M
| $685K | ﹤0.01% |
871
+413
| +90% | +$3.45K |
|
2658
Alerian MLP ETF
AMLP
$13B
| $683K | ﹤0.01% |
34,195
+34,095
| +34,095% | +$789K |
|
2659
CALL
ATI
ATI
$27B
| $683K | ﹤0.01% |
784
+393
| +101% | +$3.62K |
|
|
ESPR
2660
DELISTED
Esperion Therapeutics
ESPR
| $683K | ﹤0.01% |
18,384
-1,027
| -5% | -$40.7K |
|
2661
CALL
Ubiquiti
UI
$31.8B
| $683K | ﹤0.01% |
41
| – | – |
|
|
MRNS
2662
CALL
DELISTED
Marinus Pharmaceuticals, Inc
MRNS
| $683K | ﹤0.01% |
533
+443
| +492% | +$3.82K |
|
2663
PUT
Vistra
VST
$55.1B
| $682K | ﹤0.01% |
362
-164
| -31% | -$3.09K |
|
|
AAWW
2664
CALL
DELISTED
Atlas Air Worldwide Holdings, Inc.
AAWW
| $682K | ﹤0.01% |
112
-63
| -36% | -$3.46K |
|
2665
VanEck Video Gaming and eSports ETF
ESPO
$235M
| $681K | ﹤0.01% |
11,070
+9,713
| +716% | +$566K |
|
2666
PUT
Principal Financial Group
PFG
$23.6B
| $680K | ﹤0.01% |
169
+92
| +119% | +$3.92K |
|
2667
PUT
Wabtec
WAB
$51.1B
| $680K | ﹤0.01% |
110
-180
| -62% | -$11.5K |
|
2668
CALL
Canadian Imperial Bank of Commerce
CM
$107B
| $679K | ﹤0.01% |
182
-1,374
| -88% | -$50.3K |
|
2669
Frontline
FRO
$8.75B
| $679K | ﹤0.01% |
104,515
+85,291
| +444% | +$654K |
|
|
SII
2670
CALL
Sprott
SII
$2.65B
| $679K | ﹤0.01% |
+199
| New | +$7.76K |
|
|
PTR
2671
DELISTED
PETROCHINA COMPANY LIMITED ADS (REP 100 H SHARES)
PTR
| $678K | ﹤0.01% |
23,052
+16,332
| +243% | +$558K |
|
2672
Alkermes
ALKS
$8.82B
| $677K | ﹤0.01% |
40,877
-39,864
| -49% | -$724K |
|
|
BAND
2673
Bandwidth Inc
BAND
$1.91B
| $677K | ﹤0.01% |
3,879
+3,766
| +3,333% | +$558K |
|
2674
CALL
Cullen/Frost Bankers
CFR
$10.3B
| $677K | ﹤0.01% |
106
-54
| -34% | -$3.79K |
|
2675
PUT
XBiotech
XBIT
$69.2M
| $677K | ﹤0.01% |
355
-3
| -0.8% | -$52 |
|
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.