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 |
Invesco QQQ Trust
QQQ
|
+$77.3M |
| 2 |
SPDR Gold Trust
GLD
|
+$73.2M |
| 3 |
iShares MSCI EAFE ETF
EFA
|
+$38.5M |
| 4 |
Netflix
NFLX
|
+$38.4M |
| 5 |
NVIDIA
NVDA
|
+$36.3M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$55.9M |
| 2 |
iPath Series B S&P 500 VIX Short-Term Futures ETN
VXX
|
+$28.3M |
| 3 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$23.1M |
| 4 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$23.1M |
| 5 |
Adobe
ADBE
|
+$22M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.49% |
| 2 | Consumer Discretionary | 0.47% |
| 3 | Communication Services | 0.34% |
| 4 | Healthcare | 0.26% |
| 5 | Financials | 0.23% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
726
TSMC
TSM
$2.16T
| $6.22M | 0.01% |
109,532
-117,483
| -52% | -$6.19M |
|
727
PUT
Vale
VALE
$64.3B
| $6.2M | 0.01% |
6,009
-1,196
| -17% | -$10.9K |
|
728
CALL
Tandem Diabetes Care
TNDM
$1.14B
| $6.19M | 0.01% |
626
+447
| +250% | +$35.7K |
|
729
CALL
Southern Company
SO
$108B
| $6.18M | 0.01% |
1,192
-1,021
| -46% | -$56.8K |
|
730
PUT
iShares Convertible Bond ETF
ICVT
$7.41B
| $6.11M | 0.01% |
2,407
-833
| -26% | -$52.9K |
|
|
NBIS
731
PUT
Nebius Group N.V.
NBIS
$56.7B
| $6.11M | 0.01% |
1,221
-296
| -20% | -$11.9K |
|
732
CALL
Johnson Controls International
JCI
$87.8B
| $6.09M | 0.01% |
1,785
+1,418
| +386% | +$43.6K |
|
733
CALL
Intercontinental Exchange
ICE
$81B
| $6.09M | 0.01% |
665
-142
| -18% | -$13K |
|
734
PUT
Copart
CPRT
$24.9B
| $6.09M | 0.01% |
2,924
-484
| -14% | -$9.72K |
|
|
GAP
735
CALL
The Gap Inc
GAP
$6.85B
| $6.06M | 0.01% |
4,802
+4,225
| +732% | +$38.1K |
|
736
PUT
Stryker
SYK
$121B
| $6.04M | 0.01% |
335
-9
| -3% | -$1.66K |
|
|
CERN
737
PUT
DELISTED
Cerner Corp
CERN
| $6.03M | 0.01% |
880
+133
| +18% | +$9.14K |
|
738
PUT
Aon
AON
$75.1B
| $6.03M | 0.01% |
313
+297
| +1,856% | +$55.3K |
|
|
CGC
739
CALL
Canopy Growth
CGC
$379M
| $6.01M | 0.01% |
372
+107
| +40% | +$17.3K |
|
740
CALL
Phillips 66
PSX
$86.2B
| $6.01M | 0.01% |
836
+507
| +154% | +$35.9K |
|
741
CALL
Bilibili
BILI
$7.34B
| $6M | 0.01% |
1,295
-268
| -17% | -$8.7K |
|
742
CALL
Dominion Energy
D
$62.7B
| $5.99M | 0.01% |
738
-315
| -30% | -$25.3K |
|
743
CALL
Energy Transfer Partners
ET
$70.2B
| $5.99M | 0.01% |
8,411
+3,474
| +70% | +$25.7K |
|
|
MOMO
744
PUT
Hello Group
MOMO
$873M
| $5.98M | 0.01% |
3,422
+2,217
| +184% | +$46.6K |
|
745
CALL
AutoZone
AZO
$48B
| $5.98M | 0.01% |
53
-22
| -29% | -$23.2K |
|
|
746
CALL
Copart
CPRT
$24.9B
| $5.98M | 0.01% |
2,872
-2,584
| -47% | -$51.9K |
|
747
CALL
Pinterest
PINS
$12.3B
| $5.98M | 0.01% |
2,696
+641
| +31% | +$12.5K |
|
748
PUT
Logitech
LOGI
$15B
| $5.97M | 0.01% |
916
+588
| +179% | +$31.3K |
|
749
PUT
SS&C Technologies
SSNC
$16.1B
| $5.97M | 0.01% |
1,057
-203
| -16% | -$11.1K |
|
|
ABMD
750
CALL
DELISTED
Abiomed Inc
ABMD
| $5.97M | 0.01% |
247
+26
| +12% | +$5.22K |
|
Similar funds
Simplex Trading's Q2 2020 Portfolio in Review
As of Q2 2020, Simplex Trading held 8,917 positions worth $62.7B, up 11% from $56.7B the previous quarter. Its ten largest holdings account for 44% of the portfolio.
Simplex Trading's Q2 2020 filing shows 1,290 new, 3,427 increased, 2,723 reduced and 1,278 closed positions. Its largest new stake was iShares MSCI EAFE ETF: 665,841 shares worth $40.5M. The largest sale was Apple, an estimated $55.9M.
By sector, the portfolio is most concentrated in Technology at 0.49% of assets, up from 0.49% a quarter earlier, followed by Consumer Discretionary and Communication Services.
- Simplex Trading's largest Q2 2020 buy was iShares MSCI EAFE ETF: 665,841 shares worth $40.5M.
- Simplex Trading added most to Invesco QQQ Trust in Q2 2020, an estimated $77.3M increase.
- Simplex Trading's biggest Q2 2020 reduction was Apple, cutting an estimated $55.9M.
- Simplex Trading fully exited Adobe in Q2 2020, selling an estimated $22M.
- Simplex Trading's ten largest holdings make up 44% of its $62.7B portfolio in Q2 2020.
- Simplex Trading opened 1,290 new positions and closed 1,278 in Q2 2020.
- Simplex Trading's portfolio value rose 11% quarter-over-quarter to $62.7B.
Based on Simplex Trading's 13F filing for Q2 2020, filed 13 Jul 2020.