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 | |
|---|---|---|---|---|---|---|
1276
PUT
PVH
PVH
$3.71B
| $2.67M | ﹤0.01% |
556
-189
| -25% | -$8.81K |
|
1277
PUT
W.W. Grainger
GWW
$65.3B
| $2.67M | ﹤0.01% |
85
-5
| -6% | -$1.45K |
|
1278
CALL
Dick's Sporting Goods
DKS
$18.4B
| $2.67M | ﹤0.01% |
646
+534
| +477% | +$17K |
|
1279
Halliburton
HAL
$27.9B
| $2.66M | ﹤0.01% |
205,013
+67,868
| +49% | +$732K |
|
1280
CALL
Jack in the Box
JACK
$278M
| $2.66M | ﹤0.01% |
359
+240
| +202% | +$14.8K |
|
1281
CALL
Brown & Brown
BRO
$22.9B
| $2.66M | ﹤0.01% |
652
+65
| +11% | +$2.51K |
|
1282
PUT
Parker-Hannifin
PH
$125B
| $2.66M | ﹤0.01% |
145
+41
| +39% | +$6.62K |
|
1283
PUT
McCormick & Company Non-Voting
MKC
$13.4B
| $2.65M | ﹤0.01% |
296
+162
| +121% | +$13.3K |
|
|
MRSH
1284
CALL
Marsh
MRSH
$86.3B
| $2.65M | ﹤0.01% |
247
+207
| +518% | +$21K |
|
|
CTRA
1285
CALL
DELISTED
Coterra Energy
CTRA
| $2.64M | ﹤0.01% |
1,539
+645
| +72% | +$12.5K |
|
|
EPAY
1286
PUT
DELISTED
Bottomline Technologies Inc
EPAY
| $2.64M | ﹤0.01% |
520
+127
| +32% | +$5.67K |
|
1287
CALL
United States Brent Oil Fund
BNO
$815M
| $2.64M | ﹤0.01% |
2,446
+2,113
| +635% | +$19.3K |
|
1288
CALL
Wendy's
WEN
$1.33B
| $2.64M | ﹤0.01% |
1,211
-310
| -20% | -$6.16K |
|
1289
PUT
PagSeguro Digital
PAGS
$2.57B
| $2.63M | ﹤0.01% |
745
+435
| +140% | +$12.2K |
|
|
CMA
1290
PUT
DELISTED
Comerica
CMA
| $2.63M | ﹤0.01% |
690
-248
| -26% | -$8.65K |
|
1291
PUT
Energy Transfer Partners
ET
$70.1B
| $2.63M | ﹤0.01% |
3,688
-354
| -9% | -$2.62K |
|
1292
CALL
Knight Transportation
KNX
$11.8B
| $2.62M | ﹤0.01% |
629
+153
| +32% | +$5.83K |
|
1293
CALL
Alnylam Pharmaceuticals
ALNY
$36.3B
| $2.62M | ﹤0.01% |
177
-387
| -69% | -$52.2K |
|
1294
CALL
Devon Energy
DVN
$51.9B
| $2.62M | ﹤0.01% |
2,308
+1,222
| +113% | +$13.9K |
|
1295
PUT
Guidewire Software
GWRE
$11.5B
| $2.62M | ﹤0.01% |
236
-115
| -33% | -$11K |
|
|
DAY
1296
PUT
DELISTED
Dayforce
DAY
| $2.62M | ﹤0.01% |
330
+243
| +279% | +$15.6K |
|
1297
CALL
GoDaddy
GDDY
$12.3B
| $2.61M | ﹤0.01% |
356
+197
| +124% | +$14.1K |
|
|
ZNGA
1298
CALL
DELISTED
ZYNGA INC. CL A COMMON
ZNGA
| $2.61M | ﹤0.01% |
2,735
+1,089
| +66% | +$8.93K |
|
1299
CALL
Suncor Energy
SU
$77.7B
| $2.6M | ﹤0.01% |
1,543
+27
| +2% | +$462 |
|
1300
PUT
Agilent Technologies
A
$39.1B
| $2.6M | ﹤0.01% |
294
-440
| -60% | -$36K |
|
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.