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 |
Broadcom
AVGO
|
+$33.7M |
| 2 |
SPDR Gold Trust
GLD
|
+$17.8M |
| 3 |
iShares MSCI Emerging Markets ETF
EEM
|
+$14.3M |
| 4 |
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
|
+$11.9M |
| 5 |
Citigroup
C
|
+$8.7M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$34.2M |
| 2 |
GMCR
KEURIG GREEN MTN INC
GMCR
|
+$17.9M |
| 3 |
Chipotle Mexican Grill
CMG
|
+$14.7M |
| 4 |
Walt Disney
DIS
|
+$13.3M |
| 5 |
Booking.com
BKNG
|
+$12.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 7.64% |
| 2 | Communication Services | 6.85% |
| 3 | Consumer Discretionary | 4.92% |
| 4 | Healthcare | 4.57% |
| 5 | Financials | 4.22% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2351
PUT
World Acceptance Corp
WRLD
$950M
| $33K | ﹤0.01% |
131
-131
| -50% | -$4.62K |
|
|
ONIT
2352
Onity Group
ONIT
$333M
| $33K | ﹤0.01% |
898
-1,385
| -61% | -$95.1K |
|
|
WBT
2353
CALL
DELISTED
Welbilt, Inc.
WBT
| $33K | ﹤0.01% |
+134
| New | +$1.95K |
|
|
PE
2354
CALL
DELISTED
PARSLEY ENERGY INC
PE
| $33K | ﹤0.01% |
178
+158
| +790% | +$2.92K |
|
|
DYN
2355
PUT
DELISTED
Dynegy, Inc.
DYN
| $33K | ﹤0.01% |
954
+750
| +368% | +$8.54K |
|
|
FIG
2356
CALL
DELISTED
Fortress Investment Group Llc
FIG
| $33K | ﹤0.01% |
+147
| New | +$661 |
|
|
OME
2357
DELISTED
Omega Protein
OME
| $33K | ﹤0.01% |
1,991
-1,794
| -47% | -$36.8K |
|
|
BEAV
2358
PUT
DELISTED
B/E Aerospace Inc
BEAV
| $33K | ﹤0.01% |
20
-5
| -20% | -$214 |
|
|
YELL
2359
DELISTED
Yellow Corporation Common Stock
YELL
| $33K | ﹤0.01% |
3,629
-5,858
| -62% | -$55.6K |
|
2360
Asbury Automotive
ABG
$4.19B
| $32K | ﹤0.01% |
537
-2,000
| -79% | -$109K |
|
2361
PUT
Accenture
ACN
$89.9B
| $32K | ﹤0.01% |
348
+217
| +166% | +$22.3K |
|
2362
CALL
Advanced Micro Devices
AMD
$851B
| $32K | ﹤0.01% |
901
+205
| +29% | +$466 |
|
2363
Aptiv
APTV
$12B
| $32K | ﹤0.01% |
+438
| New | +$30K |
|
2364
CALL
Ashland
ASH
$3.04B
| $32K | ﹤0.01% |
+61
| New | +$2.94K |
|
2365
CALL
Avery Dennison
AVY
$12.3B
| $32K | ﹤0.01% |
88
-28
| -24% | -$1.81K |
|
2366
CALL
Acuity Brands
AYI
$9.88B
| $32K | ﹤0.01% |
54
+37
| +218% | +$7.63K |
|
2367
CALL
Bunge Global
BG
$23.6B
| $32K | ﹤0.01% |
304
+110
| +57% | +$6.28K |
|
2368
CALL
Badger Meter
BMI
$3.66B
| $32K | ﹤0.01% |
+90
| New | +$2.78K |
|
2369
The GEO Group
GEO
$4.13B
| $32K | ﹤0.01% |
+1,388
| New | +$27.1K |
|
2370
Gildan
GIL
$9.25B
| $32K | ﹤0.01% |
+1,067
| New | +$28.3K |
|
2371
CALL
ICICI Bank
IBN
$106B
| $32K | ﹤0.01% |
310
-100
| -24% | -$586 |
|
2372
CALL
Inogen
INGN
$167M
| $32K | ﹤0.01% |
46
+36
| +360% | +$1.28K |
|
2373
CALL
Jazz Pharmaceuticals
JAZZ
$15.9B
| $32K | ﹤0.01% |
54
+6
| +13% | +$747 |
|
2374
Kinder Morgan
KMI
$73.1B
| $32K | ﹤0.01% |
1,828
-64,846
| -97% | -$1.06M |
|
2375
CALL
Cheniere Energy
LNG
$56.5B
| $32K | ﹤0.01% |
448
-62
| -12% | -$2.01K |
|
Similar funds
Simplex Trading's Q1 2016 Portfolio in Review
As of Q1 2016, Simplex Trading held 7,084 positions worth $1.25B, down 1.8% from $1.28B the previous quarter. Its ten largest holdings account for 17% of the portfolio.
Simplex Trading's Q1 2016 filing shows 1,678 new, 2,214 increased, 1,528 reduced and 1,505 closed positions. Its largest new stake was Broadcom: 2,493,400 shares worth $38.5M. The largest sale was Apple, an estimated $34.2M.
By sector, the portfolio is most concentrated in Technology at 7.6% of assets, up from 7% a quarter earlier, followed by Communication Services and Consumer Discretionary.
- Simplex Trading's largest Q1 2016 buy was Broadcom: 2,493,400 shares worth $38.5M.
- Simplex Trading added most to Citigroup in Q1 2016, an estimated $8.7M increase.
- Simplex Trading's biggest Q1 2016 reduction was Booking.com, cutting an estimated $12.1M.
- Simplex Trading fully exited Apple in Q1 2016, selling an estimated $34.2M.
- Simplex Trading's ten largest holdings make up 17% of its $1.25B portfolio in Q1 2016.
- Simplex Trading opened 1,678 new positions and closed 1,505 in Q1 2016.
- Simplex Trading's portfolio value fell 1.8% quarter-over-quarter to $1.25B.
Based on Simplex Trading's 13F filing for Q1 2016, filed 14 Apr 2016.