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 | |
|---|---|---|---|---|---|---|
|
STMP
2501
PUT
DELISTED
Stamps.com, Inc.
STMP
| $28K | ﹤0.01% |
57
+17
| +43% | +$1.74K |
|
2502
PUT
Andersons Inc
ANDE
$2.65B
| $27K | ﹤0.01% |
16
-47
| -75% | -$1.34K |
|
2503
CALL
Builders FirstSource
BLDR
$7.84B
| $27K | ﹤0.01% |
+123
| New | +$1.06K |
|
2504
CALL
Cracker Barrel
CBRL
$1.2B
| $27K | ﹤0.01% |
28
-7
| -20% | -$966 |
|
2505
PUT
Cameco
CCJ
$38.3B
| $27K | ﹤0.01% |
70
+19
| +37% | +$227 |
|
2506
PUT
eBay
EBAY
$48.6B
| $27K | ﹤0.01% |
272
+228
| +518% | +$5.55K |
|
2507
Direxion Daily Energy Bear 2X ETF
ERY
$37.5M
| $27K | ﹤0.01% |
+25
| New | +$37.5K |
|
2508
Ezcorp Inc
EZPW
$1.82B
| $27K | ﹤0.01% |
+9,397
| New | +$29.4K |
|
2509
CALL
Five Below
FIVE
$11.2B
| $27K | ﹤0.01% |
211
+92
| +77% | +$3.36K |
|
2510
CALL
Foster
FSTR
$443M
| $27K | ﹤0.01% |
+52
| New | +$693 |
|
2511
PUT
Heron Therapeutics
HRTX
$86.3M
| $27K | ﹤0.01% |
196
+191
| +3,820% | +$3.77K |
|
|
KW
2512
DELISTED
Kennedy-Wilson Holdings
KW
| $27K | ﹤0.01% |
+1,265
| New | +$25K |
|
2513
Grand Canyon Education
LOPE
$3.71B
| $27K | ﹤0.01% |
637
+417
| +190% | +$16.1K |
|
2514
ManpowerGroup
MAN
$2.39B
| $27K | ﹤0.01% |
342
+135
| +65% | +$10.3K |
|
2515
PUT
Meritage Homes
MTH
$4.87B
| $27K | ﹤0.01% |
118
-74
| -39% | -$1.18K |
|
2516
Saic
SAIC
$5.03B
| $27K | ﹤0.01% |
+515
| New | +$22.9K |
|
2517
Smith & Nephew
SNN
$12.9B
| $27K | ﹤0.01% |
+834
| New | +$27.3K |
|
2518
Sportsman's Warehouse
SPWH
$43.7M
| $27K | ﹤0.01% |
+2,185
| New | +$27.8K |
|
2519
CALL
Supernus Pharmaceuticals
SUPN
$2.68B
| $27K | ﹤0.01% |
134
+53
| +65% | +$692 |
|
|
2520
PUT
Supernus Pharmaceuticals
SUPN
$2.68B
| $27K | ﹤0.01% |
+339
| New | +$4.42K |
|
2521
CALL
United Natural Foods
UNFI
$3.01B
| $27K | ﹤0.01% |
85
-44
| -34% | -$1.62K |
|
2522
Universal Corp
UVV
$1.34B
| $27K | ﹤0.01% |
492
-3,577
| -88% | -$194K |
|
2523
PUT
Welltower
WELL
$178B
| $27K | ﹤0.01% |
215
+184
| +594% | +$11.9K |
|
|
WPRT
2524
Westport Fuel Systems
WPRT
$36.5M
| $27K | ﹤0.01% |
+1,066
| New | +$22.5K |
|
|
GAP
2525
PUT
The Gap Inc
GAP
$6.84B
| $27K | ﹤0.01% |
340
+242
| +247% | +$6.36K |
|
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.