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 | |
|---|---|---|---|---|---|---|
3301
ICU Medical
ICUI
$4.04B
| $12K | ﹤0.01% |
+119
| New | +$11.4K |
|
3302
CALL
IMAX
IMAX
$2.47B
| $12K | ﹤0.01% |
257
+247
| +2,470% | +$7.56K |
|
3303
PUT
Incyte
INCY
$23.7B
| $12K | ﹤0.01% |
13
-45
| -78% | -$3.35K |
|
3304
CALL
IPG Photonics
IPGP
$3.81B
| $12K | ﹤0.01% |
32
-2
| -6% | -$170 |
|
3305
PUT
Lazard
LAZ
$4.23B
| $12K | ﹤0.01% |
57
-85
| -60% | -$3.05K |
|
3306
PUT
Lennar Class B
LEN.B
$20.1B
| $12K | ﹤0.01% |
324
+125
| +63% | +$4.06K |
|
3307
PUT
El Pollo Loco
LOCO
$493M
| $12K | ﹤0.01% |
175
+12
| +7% | +$151 |
|
3308
CALL
M&T Bank
MTB
$36B
| $12K | ﹤0.01% |
89
+59
| +197% | +$6.4K |
|
|
3309
PUT
M&T Bank
MTB
$36B
| $12K | ﹤0.01% |
50
+33
| +194% | +$3.58K |
|
3310
Nordic American Tanker
NAT
$1.37B
| $12K | ﹤0.01% |
+891
| New | +$11.9K |
|
3311
CALL
Navient
NAVI
$809M
| $12K | ﹤0.01% |
67
-124
| -65% | -$1.29K |
|
|
3312
PUT
Navient
NAVI
$809M
| $12K | ﹤0.01% |
159
-260
| -62% | -$2.7K |
|
3313
PUT
Neurocrine Biosciences
NBIX
$17.7B
| $12K | ﹤0.01% |
59
-25
| -30% | -$992 |
|
3314
Enpro
NPO
$6.95B
| $12K | ﹤0.01% |
+222
| New | +$10.7K |
|
3315
NatWest
NWG
$72.8B
| $12K | ﹤0.01% |
+1,767
| New | +$13.4K |
|
3316
PUT
O-I Glass
OI
$1.41B
| $12K | ﹤0.01% |
24
+8
| +50% | +$115 |
|
3317
PUT
Polaris
PII
$4.25B
| $12K | ﹤0.01% |
57
-176
| -76% | -$15.3K |
|
3318
PUT
Pilgrim's Pride
PPC
$6.94B
| $12K | ﹤0.01% |
110
+51
| +86% | +$1.18K |
|
3319
CALL
Prospect Capital
PSEC
$1.12B
| $12K | ﹤0.01% |
278
+49
| +21% | +$326 |
|
3320
PUT
Dr. Reddy's Laboratories
RDY
$9.8B
| $12K | ﹤0.01% |
315
-110
| -26% | -$983 |
|
|
SA
3321
PUT
Seabridge Gold
SA
$2.82B
| $12K | ﹤0.01% |
393
+256
| +187% | +$2.23K |
|
3322
Steven Madden
SHOO
$3.18B
| $12K | ﹤0.01% |
491
+287
| +141% | +$6.39K |
|
3323
CALL
State Street SPDR Portfolio Europe ETF
SPEU
$716M
| $12K | ﹤0.01% |
412
+150
| +57% | +$4.43K |
|
3324
SouthState Bank Corp
SSB
$10.2B
| $12K | ﹤0.01% |
202
-530
| -72% | -$34.1K |
|
3325
PUT
Toronto Dominion Bank
TD
$198B
| $12K | ﹤0.01% |
91
+80
| +727% | +$3.09K |
|
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.