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 | |
|---|---|---|---|---|---|---|
776
PUT
ProShares Ultra S&P500
SSO
$7.79B
| $5.78M | 0.01% |
11,640
+640
| +6% | +$9.06K |
|
777
JD.com
JD
$40.6B
| $5.77M | 0.01% |
95,957
-65,030
| -40% | -$3.29M |
|
778
PUT
Royal Bank of Canada
RY
$288B
| $5.76M | 0.01% |
850
+420
| +98% | +$26.7K |
|
779
PUT
PNC Financial Services
PNC
$99.3B
| $5.73M | 0.01% |
545
+8
| +1% | +$843 |
|
780
PUT
Aramark
ARMK
$15B
| $5.73M | 0.01% |
3,517
+1,707
| +94% | +$30K |
|
781
PUT
Lennar Class B
LEN.B
$19.1B
| $5.71M | 0.01% |
975
-116
| -11% | -$4.38K |
|
782
Trade Desk
TTD
$7.96B
| $5.71M | 0.01% |
+140,440
| New | +$4.23M |
|
783
CALL
Ciena
CIEN
$57.4B
| $5.7M | 0.01% |
1,053
-585
| -36% | -$29.1K |
|
784
iShares MSCI Brazil ETF
EWZ
$9.13B
| $5.69M | 0.01% |
197,765
+113,450
| +135% | +$2.97M |
|
785
PUT
VeriSign
VRSN
$23.6B
| $5.69M | 0.01% |
275
+237
| +624% | +$49.2K |
|
786
PUT
Microchip Technology
MCHP
$44B
| $5.68M | 0.01% |
1,078
-486
| -31% | -$21.9K |
|
787
CALL
First Trust Natural Gas ETF
FCG
$641M
| $5.65M | 0.01% |
359
-12
| -3% | -$86 |
|
788
CALL
Enphase Energy
ENPH
$5.05B
| $5.62M | 0.01% |
1,182
+40
| +4% | +$1.91K |
|
789
PUT
Ralph Lauren
RL
$22.2B
| $5.62M | 0.01% |
775
+359
| +86% | +$26.4K |
|
790
CALL
Synopsys
SNPS
$71.6B
| $5.62M | 0.01% |
288
-95
| -25% | -$15.7K |
|
|
IPFF
791
CALL
DELISTED
iShares International Preferred Stock ETF
IPFF
| $5.61M | 0.01% |
1,145
-347
| -23% | -$4.13K |
|
792
Autodesk
ADSK
$43.2B
| $5.59M | 0.01% |
23,360
+17,082
| +272% | +$3.36M |
|
793
CALL
KLA
KLAC
$279B
| $5.58M | 0.01% |
2,870
+610
| +27% | +$10.4K |
|
794
PUT
Diageo
DEO
$45.4B
| $5.58M | 0.01% |
415
+268
| +182% | +$36.8K |
|
795
PUT
Herbalife
HLF
$1.22B
| $5.57M | 0.01% |
1,239
+714
| +136% | +$27.7K |
|
|
ALXN
796
DELISTED
Alexion Pharmaceuticals
ALXN
| $5.55M | 0.01% |
49,449
-21,356
| -30% | -$2.27M |
|
797
PUT
PPG Industries
PPG
$25.3B
| $5.48M | 0.01% |
517
-314
| -38% | -$30.3K |
|
798
PUT
Incyte
INCY
$23.2B
| $5.47M | 0.01% |
526
+35
| +7% | +$3.37K |
|
|
GAP
799
PUT
The Gap Inc
GAP
$6.8B
| $5.45M | 0.01% |
4,319
+2,841
| +192% | +$25.6K |
|
|
PPL
800
CALL
PPL Corp
PPL
$27.3B
| $5.45M | 0.01% |
2,109
-6
| -0.3% | -$156 |
|
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.