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 | |
|---|---|---|---|---|---|---|
2751
Douglas Emmett
DEI
$2.06B
| $626K | ﹤0.01% |
+24,944
| New | +$703K |
|
|
UNIT
2752
CALL
Uniti Group
UNIT
$2.63B
| $626K | ﹤0.01% |
595
+292
| +96% | +$2.83K |
|
2753
PUT
Leidos
LDOS
$14.1B
| $624K | ﹤0.01% |
70
-240
| -77% | -$21.7K |
|
2754
PUT
Otis Worldwide
OTIS
$27.4B
| $624K | ﹤0.01% |
100
-11
| -10% | -$673 |
|
|
MITT
2755
CALL
TPG Mortgage Investment Trust
MITT
$230M
| $623K | ﹤0.01% |
753
-217
| -22% | -$1.92K |
|
2756
CALL
Progress Software
PRGS
$1.55B
| $623K | ﹤0.01% |
170
+131
| +336% | +$4.77K |
|
2757
CALL
Sonoco
SON
$5.76B
| $623K | ﹤0.01% |
122
+12
| +11% | +$635 |
|
|
EB
2758
DELISTED
Eventbrite
EB
| $622K | ﹤0.01% |
+57,358
| New | +$570K |
|
2759
CALL
Transocean
RIG
$5.92B
| $621K | ﹤0.01% |
7,705
+5,540
| +256% | +$9.06K |
|
2760
Citi Trends
CTRN
$524M
| $619K | ﹤0.01% |
24,791
+10,604
| +75% | +$211K |
|
2761
CALL
Unity
U
$12.5B
| $619K | ﹤0.01% |
+71
| New | +$5.99K |
|
2762
CALL
Franklin Resources
BEN
$16.9B
| $618K | ﹤0.01% |
304
-254
| -46% | -$5.33K |
|
|
PCH
2763
DELISTED
PotlatchDeltic
PCH
| $617K | ﹤0.01% |
+14,661
| New | +$627K |
|
|
AXNX
2764
PUT
DELISTED
Axonics, Inc. Common Stock
AXNX
| $617K | ﹤0.01% |
121
+81
| +203% | +$3.38K |
|
2765
PUT
Carriage Services
CSV
$618M
| $615K | ﹤0.01% |
276
+255
| +1,214% | +$5.36K |
|
2766
CALL
Myriad Genetics
MYGN
$530M
| $612K | ﹤0.01% |
470
+31
| +7% | +$392 |
|
2767
Invesco Senior Loan ETF
BKLN
$7.1B
| $611K | ﹤0.01% |
+28,127
| New | +$611K |
|
2768
PUT
Healthcare Services Group
HCSG
$1.56B
| $611K | ﹤0.01% |
284
+88
| +45% | +$2.05K |
|
2769
PUT
10x Genomics
TXG
$5.87B
| $610K | ﹤0.01% |
49
+34
| +227% | +$3.57K |
|
|
ICPT
2770
PUT
DELISTED
Intercept Pharmaceuticals, Inc.
ICPT
| $609K | ﹤0.01% |
147
-299
| -67% | -$13.7K |
|
|
WPX
2771
CALL
DELISTED
WPX Energy, Inc.
WPX
| $608K | ﹤0.01% |
1,241
+219
| +21% | +$1.21K |
|
2772
ABM Industries
ABM
$2.8B
| $607K | ﹤0.01% |
16,584
+16,484
| +16,484% | +$604K |
|
2773
CALL
Frontdoor
FTDR
$5.02B
| $606K | ﹤0.01% |
156
+115
| +280% | +$4.91K |
|
2774
iShares US Technology ETF
IYW
$23.7B
| $605K | ﹤0.01% |
8,040
+6,032
| +300% | +$440K |
|
|
OPLN
2775
CALL
Openlane
OPLN
$4.17B
| $603K | ﹤0.01% |
419
-396
| -49% | -$6.19K |
|
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.